Good morning everyone, and thank you for being with us this morning for our conference call on the Q1 2021 revenue. Of course, as usual now, I hope you and your closest ones are doing well and keeping safe. I will first come back to the audit in North America, further to the press release we issued April the 1st to make a follow-up, then dive into the Q1 2021 highlights. After that, I want to take you through the next steps of transformation that this group needs, and I will share with you several decisions and actions. Uwe will then come back on the financial performance of Q1 2021. We will then open the floor to your questions.
Pierre Barnabé, our Head of Manufacturing and Head of Big Data and Cybersecurity, as well as Adrian Gregory, our Head of Financial Services and Insurance and Head of Atos|Syntel, are with us this morning to answer your questions. Let's move to the slide five. I would like to start today's presentation by coming back to the press release we issued at the beginning of the month with regards to our 2020 audit in the U.S. I would like to remind the status of where we stand and the next steps. First of all, the company immediately reacted during the process and had a quick and transparent communication on April 1st, just after our auditors issued their qualification for limitation of scope on two U.S. legal entities. What happened? Several issues have been found by the company and its auditors in two U.S. legal entities.
Those two entities represent 11% of 2020 group revenue. They concern outsourcing business, the former IDM segment, and do not relate to Syntel. As stated in the press release of April 1st, the group did not identify misstatements that would be material for its consolidated financial accounts. Nevertheless, even if these are not material, the conjunction of several accounting errors and internal control weaknesses deserves a serious focus and follow-up by the group. This is on the next slide, we have decided that we as a company would conduct a full accounting review of those two U.S. entities. A status update will be given at the time of H1 results. I want to underline that our plan of actions is not limited to accounting audit matters.
We want to make sure that these issues never happen again in the U.S. and of course, never happen anywhere else, hence the launch of a strong remediation and prevention plan. This plan has been placed under the leadership of Alexandre Menais, the Group General Secretary. On the next slide, we give you the different categories of actions covered by this plan. First, preventive controls and reinforcement of the levels of approval required. Guidelines and documentation are also reinforced, in particular formalizing instructions and documentation requirements. HR reviews, of course, to make sure the right people are in the right place. In skilling and organization, additional IFRS experts are being hired, and internal control organization is being reinforced. Global compliance trainings are implemented to include additional relevant elements, and reinforced trainings are being developed for operations management.
Finally, complementary analysis is ongoing in order to ensure that the plan is exhaustive and to enrich it anywhere it is necessary. Let me now turn to the highlights of Q1 2021 on the next slides. Revenue in the first quarter of 2021 reached EUR 2,692 million, -1.9% compared to Q1 2020 at constant currency, -3.9% organically. COVID-19 was still impacting Atos business over the quarter, despite good resilience in Financial Services and Insurance and in Healthcare and Life Sciences, as well as in Northern Europe, in growing markets and Southern Europe, showing an encouraging recovery. We had a disappointment with the North America operations as some projects were postponed from Q1 2021 to subsequent quarters and fertilization projects on large contracts was low. Uwe will come back to this later during his presentation.
Further to the increase all along 2020, the company continues to grow and increase its share in our key segments, which are digital, cloud, security and decarbonization, leading to 51% in Q1 compared to 46% last year. Total headcount was around 104,500 colleagues at the end of March 2021, roughly stable versus end of December 2020, actually slightly up. In the first quarter of 2021, the group hired around 4,200 staff. On the next slide, you see that in the first quarter of 2021, the group order entry totaled EUR 2,596 million, representing a solid book-to-bill ratio of 96%, compared to 101% achieved over the same period last year. The full backlog at the end of March 2021 amounted to EUR 23.2 billion, representing 2.1 years of revenue, up + 8% year-on-year.
The full qualified pipeline was EUR 8.4 billion at the end of March, representing nine months of revenue and up +14% year-on-year, with a large portion in our key segments, a sign that we are on the road to change our business mix. On the next slide, I selected some new contracts won in Q1. Globally, orders were signed in the key segments across most of the geographies. Interesting signatures were in IoT, smart factory, with a leading multinational automotive manufacturer, in cloud with a large European bank, as well as in Public Sector and Defense with the German employment agency for an analytic platform and associated applications. The group signed an interesting deal in pharma with Pierre Fabre in cloud, supported by artificial intelligence. We will also monitor for them cybersecurity.
In TMT, we signed with a large European telco company, a digital workplace in cybersecurity and vulnerability management contract. In digital workplace, we also signed a new contract with an international airlines company. Let's move to the next slide, where you can see digital security activity continued its acceleration in Q1 2021. First, in Q1 2021, we won many deals across all regional business units, covering a large panel of value propositions. This was possible thanks to the wide presence of Atos in these geographies. Second, the portfolio of offerings is in constant evolution to fit the market and especially on the as a service side of the house. One example in identity and access management, Evidian IDaaS offer available from the cloud on a subscription basis is now on Google Cloud Platform.
Another one in cybersecurity services, manage detection and response offerings were extended to combine Atos prescriptive SOC and Paladion platform, a cloud-native solution with hybrid and multi-cloud support. The recent acquisitions are well contributing to the acceleration in digital security, which is one of the pillars of our midterm plan. Pierre, in Q1, order entry was strong in that scope with 129% book-to-bill, and revenue grew by 37% year-on-year at constant currency. Let's move to the next slide to share with you some very interesting achievements in Big Data as well. Order entry in computing, which combines Big Data, high-performance computing, and quantum, increased by 17%. Thanks to the commercial successes, we doubled our factory capacity in Q1 2021 compared to Q1 2020. To illustrate this increase, I will quickly focus on two areas.
The strategy to extend computing capabilities to the edge is paying off. Use cases we extensively develop solve challenges across multiple industries, and as such, we won multiple new logos in these areas in Q1. In high-end servers, that's my second area, the important rollout of our BullSequana S servers in Google locations is on track for Q1 2021, with more than 500 high-speed servers delivered. Capacity should accelerate over the next quarters. On the next slide, you will see that the decarbonization business we launched last year is delivering. The business generated EUR 20 million revenue in Q1, together with EUR 35 million order entry. This is a good signal for its potential and the positive impact we expect in midterm on the group revenue growth.
Our offering is very well received across industries, thanks to its completeness, Atos being able to propose digital decarbonization assessments, design and develop the technology solutions of the future for decarbonization at their core, propose consultancy services through EcoAct acquired last year, and commit to decarbonization level agreements with a guarantee of carbon reduction target and/or offsetting. Let's move to the next slide. We are preparing our workforce to succeed at a high level in a post-pandemic world, ensuring that skills, training, flexibility, and above all, health are ready both today and tomorrow. I just want to underline on this slide that in Q1, our workforce achieved close to 14,000 new digital certifications with significant increases in SAP and cyber certifications, and more particularly, new cloud certifications having doubled in Q1 this year compared to Q1 2020.
On the next and last slide of this section, we confirm today the full year objectives as they have been issued on February 18th this year. In the next section, I would like to take you through the transformation journey of Atos and the next steps of transformation that the group needs. Let's start on the next slide. The first and urgent step of transformation was Spring that we launched early 2020. That was about the way we present ourselves towards our customers, the way we address their needs. Spring is delivering a very positive response from customers and also bringing tangible benefits to employees and the group. Our customers are giving us great feedback on the evolution of our offerings and the industry-specific innovation, as well as the technology leadership we are already known for.
As a result, our Net Promoter Score has gone up by +6% to an all-time high. All this translated into a strong commercial momentum with the highest order entry last year ever reached. As well as the commercial momentum, we are also seeing positive feedback from employees. Client executive partners overwhelmingly feel they are bringing more specific value to customers, and this is reflected across all our employees with great place to work scores up by 9 percentage points. Now, I would like on the next slide to go through the next steps of transformation that we need. First, we need to address our recurring North American business issues after another disappointment in Q1, as explained earlier. Our plan for North America holds on the six pillars you see here. First of all, we expect the new logos to be ramped up over the year.
For instance, large hospital chain applications and infrastructure deal won last year is on track to go live on May 1st. We are ready to deliver for Otis a fully managed digital workplace. We will start cloud migration project during Q3 for Willis Towers Watson. We will start rolling out the smart kiosk solution in Q3 for Goli. Across all industries, we are strengthening the leadership and account teams, welcoming many new joiners. Four new heads of industries plus two heads of consulting being brought in, all with very strong industry experience. We also hired 10 account leaders, all from Tier 1 competition. We also see industry-specific demand rising. For example, in Public Sector and Defense, we see opportunities in citizen-centric services driven by the pandemic and following on from our success in the state of Oklahoma.
In Manufacturing and Resources & Services, we receive increasing demand for S/4HANA migrations and domain expertise in smart manufacturing, contactless and digital commerce, IoT, and smart operations. In Financial Services and Insurance, we are helping clients with increased regulatory pressure and budget reductions, and so on. Our boost on delivery excellence with the creation of a dedicated North America quality risk and customer experience organization will improve performance on the accounts. The focus on quality of service is improving customer satisfaction, 11% improvement in Net Promoter Score compared to the same period last year, which means our customers are more open to discussing the broader Atos capabilities. For example, we are pursuing cloud migration opportunity with one of our Manufacturing clients following improvement of some specific delivery issues. Therefore, we are expecting ramp-up in fertilization along the year.
We also set up five streams to drive even higher Atos|Syntel cross-sell into respective accounts, improving joint end-to-end go-to market, including with Maven Wave. Finally, we leverage our strategic alliances to expand our offerings, and we will also leverage new acquisitions and their current partnerships like Maven Wave with a Google Cloud premier partner or Eagle Creek with a Salesforce Gold Partner to accelerate momentum, combining capabilities, integrating certifications, and elevating Atos partnership levels too. On the next slide, very importantly, we want definitely to address the profitability issue which weighs on our German operations. Indeed, we have parts of the business, all of them related to former IDM business, which are loss-making and cash negative. All the issues relate to a legacy heavy structure of cost. This hampers not only our agility but also our competitiveness. The decision is made to engage in two discussions.
We want to implement the measures which are to be at the same time appropriate, but significant and structural, obviously under the local regulation. These measures are expected to start within this year, 2021. In Q1 and in prolongation of 2020, the group continued to work on its key segments: digital, cloud, security, and decarbonization, as you can see on the next slide. The strategy to pivot the group towards those key segments of business currently relies on two dimensions. First, the organic reconfiguration of our portfolio of offerings with Spring. Second, our bolt-on acquisitions program. By the way, I am delighted to announce three more acquisitions today. Ipsotek, a leader in edge and computer vision solutions, headquartered in the U.K. cryptovision, specialized in cryptography solutions and products, headquartered in Germany.
Processia, a specialist of product lifecycle management, PLM, headquartered in Canada, but with operations in the U.S., in the U.K., and in France. Now, in addition to these actions and programs to reposition the group, we have decided to activate a third dimension. We will initiate a portfolio strategic review of non-core assets to accelerate this ability to change our business mix. Before I leave the floor to Uwe, I would like to share with you on the next slide the necessary move that I want to operate for the company. This transformation is not much commercial or financial. It fully relates to our human capital and our culture. We do have to implement culture changes internally, leveraging on our DNA strengths, which are undoubtedly strong. I don't want to comment on all of them.
You can read on the left side of the slide, but we clearly built strong market positions. We have a loyal customer base, a very strong technology content, strong differentiators, our people fighting every day, and a long-standing ESG focus. We need now to move to an anchored and permanent culture of customer obsession. In the same spirit, we need to implement a culture of structural quality. We want to boost our quality standards, delivering long-term impact and enforcing our competitiveness on the long run with a focus on structural actions. We must also continue to enrich and develop our people with digital skills in order for them to embrace with no resistance and with full capabilities our seven digital breakthrough from full stack cloud to security, from business critical applications to digital platforms, from employee to customer experience, and of course, decarbonization.
This would come from our training efforts, also supported by bolt-on acquisitions. We need to accelerate on the offshoring and nearshoring front. A step change in mindsets is needed here. Finally, reinforcing accountability spirit within the company is still necessary, as well as developing further our human capital. All our actions must be aligned with our [Non-English content] , our purpose, with priorities and culture of commitment, loyalty and development. To cover all the areas I just detailed, I will launch in H1 a company-wide change management program led by an executive reporting directly to me. With the announcement of these new important steps for the company, I conclude my overview and now hand over to Uwe. Uwe, the floor is yours. Thank you.
Thank you, Elie, and good morning, everybody. Before going to revenue, let's stop on the backlog that continues to be strong and grew 8% year-over-year. The EUR 23.2 billion of backlog are well-balanced across industries and regional business units. The backlog represents 2.1 years of annual revenue. Let's move to the next slide on the evolution of our business mix. The group has continued to make good progress towards its midterm target to generate 65% of its revenue in digital, cloud security and decarbonization. In 2020, we improved to 46% and in Q1 2021, we stand at 51% of group revenue. 70% of the sales pipeline at the end of Q1 was in these pillars. This is a good sign that our customer-facing teams are selling the right portfolio.
Moreover, the 12 acquisitions made already and the three announced today will speed up the business mix shift towards our midterm targets. On the next slide, we find the first quarter 2021 revenue performance by industry in comparison at constant currency to same period last year. Overall decline is -1.9% compared to Q1 in 2020, which was only slightly impacted by COVID. The performance by industry is differentiated. Financial Services and Insurance grew 7.4% across geographies, thanks to more digital transformation projects and new customer wins in the second half of 2020. Health & Life Sciences grew by 3.4% on a broad geographic base, thanks to expanded scope in existing customers and new wins. Manufacturing declined by -6.7%, mainly in Central Europe and North America, still impacted by COVID in comparison to Q1 2020.
Public Sector and Defense is down -3.2% due to high-performance computing project delays to subsequent quarters as well as volume reductions in North America, but expected to recover in Q2. Telecom, Media and Technology reported -5%. Performance was impacted by the base effects of some large deals performed in 2020 and not repeated in 2021, while a large worldwide contract with a global technology company generated positive contribution to the industry. Resources & Services decreased by 6.2% with different dynamic within its components. The business with utility customers is performing well, but the transportation and retail segment continues to be affected by lower demand. On the next slide, you can see the quarterly evolution of the growth rates at constant currency by industry for the last quarters. This includes as well some indications how I anticipate Q2 2021 to perform from the current viewpoint.
Starting by Manufacturing, which is progressively improving, in particular in the sectors which have been heavily affected, such as aerospace, automotive, chemicals, and process industries. This industry is under the leadership of Pierre Barnabé since the beginning of the year. Pierre was particularly successful to grow both Public Sector and Defense, as well as Big Data and Cybersecurity in the past. In this industry, some recovery was already made. We see more and more customers willing to invest in digital, cloud, and security, and decarbonization projects. Bookings were improving in Q1 whereas previous quarters, and therefore I expect a continuation of this recovery trend. Financial Services and Insurance improved significantly in the last quarters, and the business sees high demand, especially in cloud and digital transformation projects, both in our banking and insurance clients. In Q2, good growth will remain, but below the 7% level of Q1.
Next is Public Sector and Defense. As explained before, the decline in Q1 is mainly due to some high-performance computing projects delayed into the next quarters. Therefore, we expect Q1 to be the exception and Q2 to return to growth already. In Telecom, Media and Technology, while the legacy unified communication business continued to decline, I expect Q2 growth rate to improve given the 2020 base effects and the stronger business with hyperscalers. Resources & Services is clearly expected to improve in Q2 after a difficult Q1 from the combination of improvements in sectors very penalized last year by the demand of customers and continued growth in energy and utilities. Healthcare and Life Sciences growth evolution was relatively stable over the last quarters, and we expect this trend to continue. Next slide, I would like to switch to the performance by regional business units.
North America decreased by -9.4% at constant currency. While a part of the decline is explained by COVID-19 last year hitting North America later than Europe, the volume reduction in Public Sector and one-time sales in Q1 2020, the region performed behind our expectations by circa EUR 40 million. 60% of this miss is coming from projects postponed from Q1 2021 to subsequent quarters, and the remaining 40% from the lack of fertilization in existing customers. Northern Europe increased by 6.2%. Strong business growth was recorded in TMT as well in Financial Services and Insurance, and Health & Life Sciences. Central Europe is down 8.5%. This mainly resulted from a still challenging situation in the UCC business and also from the macro trends in Manufacturing. Several new contracts in Healthcare and Life Sciences, Resources & Services, but also Public Sector and Defense could not compensate for that.
Southern Europe increased by 1.9% compared to Q1 2020. The growth of the business was mainly driven by the good performance in Public Sector, Financial Services, Resources & Services, and Health & Life Sciences. The situation remained challenging in Telecom, Media and Technology, and to a lesser extent in Manufacturing. Growing markets is up 5.1%. In most of the industries, the activity was stronger with new digital projects within Financial Services and Insurance being particularly strong. On the next slide, I'd like to talk you through the quarterly growth rates trends by geography. First, North America. After a weak Q1, as explained before, I expect that in Q2 the growth rate will improve as projects shifted from Q1 start materializing and project ramp-up of 2020 wins are continuing. In Northern Europe, the trend goes in the right direction, especially in Financial Services, TMT, and Health & Life Sciences.
This will continue, but the growth rate will be slightly lower than in Q1. In Central Europe, we expect improvement, especially with incremental business at Siemens and continued recovery of the Manufacturing business. Southern Europe made great progress the last few quarters and will continue to improve in Q2 and subsequent quarters, thanks to new wins and increased fertilization in existing accounts. Growing markets considerably improved the last quarters and more particularly in Q1 2021. I expect further improvement of growth rate in Q2. I sum up for the group overall, we expect Q2 growth rate at constant currency to improve significantly and to deliver positive organic growth in Q2. For the year, I expect a profile which is more seasonal towards second semester in terms of revenue growth and subsequently in margin in comparison to last year. Shifting to my last slide on the headcount development.
The total headcount at the end of March 2021 was slightly up compared to the end of December 2020. The scope impact is related to the new acquisitions of Eagle Creek, SEC Consult, Motiv, In Fidem, and Profit4SF. In the first quarter of 2021, the group hired 4,215 employees. The hiring have mainly occurred in offshore and nearshore countries such as India, Poland, and Romania. Thank you. Back to you, Elie.
Thank you very much, Uwe, and now let's move directly to your questions.
Thank you. We'll now begin the question- and- answer session. To ask a question over the phone, kindly press star one on your telephone keypad, and wait for your name to be announced. If you wish to cancel your request, kindly press the hash key. Once again, star one if you have any questions. First question, it's from the line of Stacy Pollard from JP Morgan. You may ask your question.
Hi. Thank you. Thanks for taking my questions. A few from me. First of all, you reiterated the 3.5%-4% growth for the full year.
Sort of subcategories there, do the three new acquisitions fall within that or add to it? Secondly, how should we think about the quarterly seasonality, especially given the easier year-on-year comp from Q2? Now, you did give a little bit of a hint there, but would it be fair to say that Q2 could be the highest growth quarter of this year, just given the easy comps, or should we be a bit more careful as a more gradual recovery? Second unrelated question to the growth would be just as we look at free cash flow, can you give us a sense of the H1, H2 splits as well? I know it's typically back-end loaded. Can you provide us any kind of guidance around or broad ranges around H1 expectations?
Thank you, Stacy. Hi, Stacy, and thanks for your questions. Uwe, will you take those questions, please?
Your first question was on the acquisitions. This is within the overall guidance as we said that bolt-on acquisitions would be part of it. Those acquisitions are in there, and they are about EUR 45 million on an annual basis at least for 2020. Around the recovery, Stacy, I would expect a more gradual improvement. Indeed there is a base effect for Q2, but I expect a gradual recovery of the growth rates over the next few quarters, increasing quarter- by- quarter from both organic and also growth rate at constant currency. To your question around free cash flow. We will also and always have a seasonality between the first and the second semester. I expect an improvement versus the swings which we saw in 2020. An improved situation for H1, but still a seasonality between the two semesters.
That's helpful, thanks.
I would just maybe add to the first point. Uwe gave you a number for the acquisitions on a full year basis in 2020. Of course, those three acquisitions are going to enter into our numbers only when they will be closed. Some of them will be in Q2. One of them should be more at the end of Q3. It's only that portion of revenue until the end of the year which will count, of course, in the growth at constant currency for the full year.
Got it. Thank you. Thanks.
Thank you, Stacy.
Thank you. The next question is from the line of Amit Harchandani from Citi. You may ask your question.
Thank you. Good morning, all. Amit Harchandani from Citi. Three questions, if I may. My first question relates to the comment around accounting errors, which have been found in North America. While we wait for the results of the audit, I'm assuming you have been in touch with the team in North America trying to figure out what could have led to this. Do you get the sense that these errors are an outcome of maybe potentially some pressure to deliver revenues in a business line that has been under pressure? Or is there something else which might have led to these errors? Secondly, you talked about weaknesses in internal controls. Do you have a sense for why these weaknesses have been identified now and not earlier, considering this is not related to Syntel? I'm assuming it's a part of a business which has been around before 2020.
My last question relates to the comment about a strategic review of non-core assets. Could you expand on it and talk about what in your eyes is non-core, and what's the kind of timeline you're looking at to complete the review and share the findings with us? Thank you.
Thank you, Amit, and hi, Amit. I will take those questions. On your first question, on the origin of the accounting errors. We are in the middle of an analysis at the moment to perfectly understand the root causes and what could have led to those accounting errors, even if not material. That could come from several causes, and we are today analyzing this. I cannot give you definitive conclusions. I suspect it will be quite multiple angles and causes and multiple root causes, we cannot conclude today on those causes. We will finish up the analysis and tackle the right root causes we will find for sure. Second, on the weaknesses of internal control, and that's a very important and good question. We identified some internal control weaknesses in the course of 2020.
We took some actions then with our internal audit, and corrected some of those processes all along the year. We observed, by the way, that at the end of 2020, progress had been already made, but obviously not enough. The issues around the internal control were probably more serious than what had been raised in the course of 2020. That's why we are today implementing this deep, precise, detailed remediation plan also on the internal control front. I may add that independently from these analysis and findings on internal control, a lot of people, individuals have changed in the North American team all along the year 2020, both in the finance team and in the operations team, independently from all that. That's an element of context I wanted to bring as well. On your last question on the portfolio strategic review of non-core assets.
First of all, you will recognize, Amit, that I think it's the first time the group is announcing its willingness to conduct such a review, so you will allow me not to be too detailed. I've announced that we are initiating this work in an orderly and structured manner. This is what we are engaging into now, so it's a bit early to give you more color or more details. You're asking me a more general question, I would say, what is considered non-core for the group? I would simply say that it could be an activity which could not be considered as critical to deliver the digital transformation, which is our ultimate commitment to our customers.
Maybe some parts of our activity, and again, I don't want to conclude before we do the proper review, but maybe some of our activities could be enough to partner, to outsource, to work with other parties and not necessarily own those pieces of business. Again, I will be much more specific in due time when we will have conducted this review. I think the information today, which is I think important for the group, important for you, is that we have decided something that had never been decided, and which I think is very necessary for this group, is to conduct this review and act consequently.
Thank you.
Thank you very much, Amit.
Thank you. Our next question is from the line of Mohammed Moawalla from Goldman Sachs. You may ask your question now.
Great. Thank you. Morning, Elie. Morning, Uwe. A couple from me. Number one, Uwe, I think at the time of Q4, you said that the inorganic contribution for the year was expected to be around 200 basis points. Based on sort of what you have done so far, but also the rest of the pipeline on M&A, do you still expect that to be the case? Secondly, just coming back on the sort of shape of the growth recovery. In terms of your sort of expectations, clearly, Q2 you said will be positive, but I noted a comment that the second semester will be more back-end loaded. Is it fair to assume that, I know the comps are still easy in Q3, but would you expect to sort of stay positive in Q3 on an organic basis, or is it very back-end loaded?
Lastly, just a question on some of the sort of group initiatives to turn things around. Will you expect to take any additional restructuring charges, or is that already baked into the current assumptions that you have for the full year in the free cash flow? Thank you.
Hi, Mo, and thanks for your questions. Uwe will answer.
Hi, Mo. Good morning. On your first question around the inorganic, indeed, when we communicated the, let's say, composition of the 3.5%-4% was circa 2% coming from inorganic. That is still my view. As you know, Elie explained before on the acquisitions, of course, it depends always on a bit of the timing of when these acquisitions close and enter the books of the group. As we see and from the pipeline and current experience, that indeed is still a good assumption to have about 200 basis points from the bolt-on acquisitions. On your second point around the quarterly development, I expect, as I said, Q2 already to be growth on both counts, organic and at constant currency, and also in Q3 and Q4.
While we are seeing a ramp-up of the growth rate, Q3 as well will see an improvement versus Q2 and then sequentially to Q4. On the restructuring, obviously as we guided before that we expect in 2021, means this year, the restructuring, rationalization, integration, these three components together to be at around 2%, so a bit higher than in the previous year. This is mainly due to the program Elie announced as well on Germany. As we said, we will focus a lot of our efforts in fixing the situation in Germany. After 2021, from a net income perspective, on P&L perspective, to go below 1%. This is absolutely still the plan and will only be this year with heightened restructuring charges, mainly due to the German project.
Okay, that's great. Can I just follow up on, just in terms of the different segments. I know you stopped sort of breaking the business segments out, but if we think about the sort of the back half of the year, particularly around that sort of recovery. Maybe if you could add some color on sort of B&PS or the kind of more cyclical consulting business. What's the visibility you have around that in terms of sort of projects? I guess, what are the risk factors? Is it still kind of infrastructure stabilization? If you could help us just with some qualitative color. Thank you.
I would say indeed, if you think about the more project type business or application-led business, then of course Q1 was still, due to the base impact to Q1 2020, still of course a decline. We see the application and the project business recovering. We see that already in the number of headcount in that area, number of projects going in. We expect Q2 indeed already now growing and also recovering. You saw also Financial Services being already an early indicator of growth. This is an industry where we have a lot of project and application business. We expect this business to recover and from now on being growing quarter- by- quarter.
Okay. That's great. Thank you.
Thank you, Mo.
Thank you, Mo.
Our next question is from the line of Amit Harchandani again from Citi. You may ask your question.
Thank you very much for taking my follow-on question, if I may. Couple if I may. The first one is the timing of the strategic review that you've announced today, Elie. We've obviously seen the move for DXC, which did not quite go through as anticipated, and you've talked about M&A in the past. Is this strategic review a sign that maybe some of your organic actions in some of these businesses haven't yielded the results you wanted, and/or maybe you're looking to focus more on what you can change internally rather than looking to do transformational M&A? Any thoughts around what's triggered the strategic review would be helpful. Secondly, if I may, with regards to North America, and you've sort of talked about the pathway towards recovery coming through in North America. Is there any element of significant restructuring that would be required to deliver this turnaround?
Just wanted to clarify that. Thank you.
Thank you, Amit, for your additional questions. On the strategic review, we will give you a status update, I think at the time of the H1 results. Already, we will inform you of course, regularly on our advancement. On your question, why are we doing this? It is exactly what I explained at the beginning in my presentation. We want to accelerate the transformation of the group. You basically have three levels, three dimensions to transform the group in terms of business content. First is the organic dimension, which we are pushing hard with our offerings in the key segments. You saw the results in some of those segments, like security, for example. The second level is the bolt-on acquisitions. I think we are delivering on this commitment.
10 last year, three or four, one at the beginning of the year, three now that we just announced exactly in the areas that we said. Now we're just seeing that we want to use a third dimension, which is to revisit our current portfolio and potentially do something about it. You shouldn't see anything else like this. I have to say that our pipeline of bolt-on acquisitions is very well provided. There is a lot of possibilities. We will continue, and if we can do more, of course, we will do more. Here also to accelerate on that dimension. Your second question, Amit, which was on North America. We do not expect a large restructuring in North America to support the plan of recovery that we presented. Thanks, Amit.
Thank you.
Thank you. Our next question is from the line of Laurent Daure from Kepler Cheuvreux. You may ask your question.
Thank you. Morning, gentlemen. I have two questions. The first is back on the restructuring charge that you do not change in absolute number. I'd just like to understand better, because you already started to restructure Germany. I think it was early retirement plan. What are you doing additional to that, and why is the total number unchanged despite taking more actions? My second question is on the U.S., which is for sure the toughest part. This activity has been made of a series of acquisitions from Siemens, Xerox, and Syntel. Do you believe you need to do more integration between all those unit, or what is for you the main issue in the region at the moment?
Uwe, you take the first one, I will take the second one on the U.S.
Good morning, Laurent. To your first question, first of all, we have an increase. We say 2%, last year we were at 1.6%, 1.7%. We are increasing this year the restructuring. Indeed too we did restructuring but I would say not enough to cover or to fix the issue. So indeed we did early retirement, other programs, but we need to do more deep and more structural changes in Germany. How we do it within the envelope which we communicated is we will focus, of course, our restructuring into Germany. We believe that in the other countries there is, I would say, not that much to do in comparison to Germany. So Germany is really the focus of that activity. Of course, more to be communicated as we just start a dialogue with the social institutions. Of course we will go deeper than what we did in the past.
Thank you, Uwe. H i, Laurent. Thanks for your question. Your second question in the U.S., what I would say on the U.S. is that this business mix topic of this group, the structure of the business of the group is probably more prominent in the U.S. than in the average of the group. We have in the U.S. something like EUR 2 billion of business. Indeed, due to the acquisitions you mentioned, which is infrastructure business. We've got Syntel, which we are very happy with, but we have roughly EUR 2 billion of infrastructure business in the U.S. We are transforming it. We are making those bolt-on acquisitions, in particular in cloud. If you look at our activity in cloud applications, it's booming. Thanks to Maven Wave and some others, we are growing like the market, if not better.
That piece is still too small compared to the legacy infrastructure business in the U.S. I would say this is our issue and this is why I'm insisting on using any lever, any dimension to change the mix of our activities. If you look at the group as a whole and you compare to whoever, you will make very quick and shortcut comparisons. If you look at the group really business by business, in any of our business, we are at either like the market or better than the market. The problem of this group that we're trying to solve with this strategy is a question of content, of business mix. This is why I'm keeping and repeating and coming back on this. This is what we're trying to do.
I repeat that in the U.S., we've got many successes in cross-selling with Syntel, many successes around the cloud application, re-platforming, containerization, et cetera. We need to grow this part of the business. When we are in this business, we are very successful. Thank you, Laurent.
Thank you.
Thank you. Let's move to next question.
Thank you. The next question is from the line of Alexandre Faure from Exane BNP Paribas.
Good morning. Thanks for squeezing me in. Just have one quick follow-up on capital allocation. Thanks for updating us on the bolt-on pipeline. Was just wondering how we should think of perhaps more medium-size M&A going forward and even possibly other sorts of capital allocation options you might be thinking of. Elie, as you said, the strategic review is a first for Atos, so perhaps we have other firsts even though I know you're not a big fan of share buybacks. Perhaps you've changed your view on this, so how should we think of capital allocation going forward?
Hello, Alexandre, and thanks for your question. Well, there are many questions in your question. First, on bolt-on acquisitions, I think we're very satisfied now. We've got Uwe and Pierre and Adrian. We've got 18 months of background on this. We've done quite a lot. I think we're satisfied with all of them. Keeping the management, the result, double-digit growth, et cetera, and also already, and I'm looking at Pierre, thinking of many deals that we've won thanks to those acquisitions. L arger deals, which are really synergetic even with bolt-on acquisitions. This strategy we could intensify. Second, you ask on more mid-size deals. We are ready for mid-size deals, but I will only repeat what I've been saying many times now. Any move, small or medium, would only be executed if it fits and supports our midterm strategy of growth.
That it helps this repositioning, this pivoting, the change of mix of the group, which is the strategy of this group. Digital, cloud, security, decarbonization. This is what we need to go. On your last question, which is of course share buyback. Let me be very clear on share buyback. First, it's a decision of the board of directors. You can be sure that the board of directors regularly discuss this option, because it's a legitimate question that several of you and several shareholders ask. The position of the group at the moment, relating to what I just said, is that the priority for this group is to transform it and to accelerate its business mix change. For this, we need money to make those bolt-on acquisitions or maybe mid-size acquisitions. So far this is the position of the board of directors of the group.
Understood. Thanks very much.
Thank you, Alexandre.
Thank you. Our next question is from Neil Steer from Redburn.
I've just got a couple of hopefully quick ones, if I may. Firstly, you've mentioned a couple of times that the accounting irregularities, you think there are no material misstatements. Can you sort of clarify what you mean by materiality in that context, please?
Hi, Neil. This is Elie. Well, it's material as defined by the auditors, so they are of limited size to the consolidated statement of the group. It's accounting technical term to say that.
Would that be sort of ±5%, 2%, 1%? Can you give us a figure?
No. This is really something which is defined by the auditors and we don't want to comment on the auditors' work. They define the materiality.
Okay. Uwe, in your presentation, I think you implied that the seasonality of margin differential first half and second half, and obviously growth is going to be more skewed in 2021 than in previous years. Can you give us a feel for what the greater margin differential would be in 2021?
Hi, Neil. It's of course, I cannot give you precise numbers, but, of course, with the delay which we have in Q1, which we believe can be caught up in the subsequent quarters based on the project delays, this will have an impact on the seasonality of revenue and of course with that also with margin. That's why I expect indeed, let's say semester over semester comparison to last year to be a bit more skewed to the second half. Cannot give you right now precise numbers. Of course, we'll communicate as soon as we know a bit more.
Okay. Just finally, I know that you're choosing not to do this, but is there any chance you could give us a sense of the organic growth by region? Obviously, there's been consistent data provided in the past on organic evolution. Somewhat difficult to get an underlying view as to how the business is genuinely performing without those numbers this time.
Look, Neil, I think we explained for some time that we would in fact just align to our competition and our competitors in terms of reporting of our numbers. I think it will be fair that if we have a huge discrepancy because of acquisitions of larger scope in a given segment, of course we will give some sense. Otherwise, we'll stick to our new way of reporting, which I repeat, is the one of all our competitors.
Okay. Thanks very much.
Thank you, Neil.
Thank you. We'll now move on to the questions coming from webcast. Mr. Gilles Arditti, the floor is yours.
Yes, good morning, all. We have a series of questions which have been asked on a written form. I will not mention the one which have been already asked by your colleagues. I'm starting with Michael Briest from UBS. What is your hiring plan for the year? Headcount was stable quarter-on-quarter. How much is likely to grow by over the year?
Uwe.
Indeed, we expect, if you think about our growth expectation, then of course this will lead to an increase of headcount, especially in the businesses which are growing like the digital cloud, cybersecurity, and decarbonization.
On the other side, of course, we'll still continue on the more, I would say, productivity-focused businesses in the infrastructure business to decline. You could probably expect that circa 1/2 of the growth overall is also translating into a headcount increase.
Also from Michael, when the portfolio review will be concluded?
I think I already answered that. We'll give a first status update at the time of the H1 results.
Question from Antonin Baudry from HSBC. What was the rate of growth of digital cloud security, which reached 51% of total revenue in Q1?
Depending bit by segment, but between 15% and 20%. Some areas are even beyond 20%, as you heard, on the security side, and some business more in the 15% range.
Okay. Question from Nicolas David from ODDO. Do you think that the current situation regarding the audit of North America fiscal year 2020 had a negative impact on revenue in Q1 in the region, i.e., some destabilization of the organization of, or more caution in the way revenue is recognized?
Well, it's a difficult question. I don't think, Uwe, that there is a direct link. There is no restatement, as far as I know, which would impact the revenue of Q1 and explain this disappointment in Q1. Now, my managerial view, I would say, is that we cannot exclude, obviously, some form of management defocus due to these audit issues over Q1. This we cannot exclude, but it's difficult to make a strict link between the two.
Okay. Question from [Adam Wood]. Q1 2021 was weaker than expected, and book-to-bill was in line with average, but below Q1, which perhaps does not point to a strong rebound post Q1. Are you still confident to hit the upper end of revenue growth guidance?
Well, I will answer to this, if I may. On the book-to-bill, we didn't talk much about the book-to-bill because 96% is the upper range of the long-term average for Q1. I think what Adam is mentioning in his question is that it's a few points below last year. We had quite many shifts of large deals which are coming up in Q2. Probably a bit more shifts than usual. We have shifts every quarter, but maybe some large ones that will happen more probably in April or May. We expect a very strong book-to-bill in Q2. At the moment, as we said, we maintain our guidance. Please consider that the range we gave for the guidance is particularly narrow, with only 50 basis points, Uwe, between the bottom and the high end of the range.
It is very early to start telling you we would be more at the bottom or at the high end of the range. My message is that the commercial activity is continuing to be vivid, dynamic, and in line with what Spring has created since the beginning of 2020.
Question from Sven Merckx from Barclays. Review of non-core assets. Do you see some regions or divisions more focused on, and why have you decided to go ahead with this now?
Thanks for the question. I think I answered an oral question already on this. Today we announced that we are going to conduct this. This is a decision. It's a real decision to do this. We've never done that before. I can't give you already some pre-results. We'll give you a status for the H1 results for sure. I can't be specific today. I'm sure you will understand on where, which, what. On your question, why have we decided to conduct this? I explained earlier. For me, this is further to the Spring program, which is organic, further to the bolt-on acquisitions program, which is inorganic. This is, for me, a third dimension to accelerate this repositioning of the business mix of the group, the change of mix of content of the group. There's nothing more than that, but still, it's an important decision.
There is nothing else than that, pursuing, intensifying, accelerating the business mix change of the group to understand in this decision.
Okay, we are going to take the last question. It's coming from Derric Marcon from Societe Generale. What's the level of revenue of legacy infrastructure now in the group, in percentage of revenue?
Obviously, we are not, as we said before, not tracking anymore the differences between the numbers. As you can calculate probably itself, of course, it is declining as the other pieces like the BDS environment and also the business around decarbonization and so on are growing. It is becoming a lesser weight in the overall business. As I said, we are tracking by industry, we are tracking by geography, but not anymore by IDM versus B&PS business.
N o more questions, Gilles? Okay. Thank you very much for your presence this morning. Of course, we all remain available for you, in particular, Gilles, of course, but Uwe, myself, and all the management team, whenever you need us and you want to ask further questions. Thank you very much. Bye-bye.