We have voluminous data at TBR, 30-plus years of data and analysis on the largest and leading companies across the technology stack, from McKinsey & Co. to Wipro, from Amazon Web Services to Verizon. Because we publish data and analysis quarterly, looking back one year and forward two to five years, we don’t often take the longitudinal view. Looking at our research since October 2021 (18 months after the start of the pandemic) to today, what can we say about the strategies, business models and investments that have separated leaders from laggards, particularly in the IT services and consulting space?
The short answer is talent and training; technology partnerships; and platforms, reusable IP and automation. If you’ve been reading our reports, you already knew that.
Longer answer: The companies that grew fastest generally combined one inorganic lever with several organic ones. Acquisitions or mergers produced large, immediate revenue spikes and confidence in a company’s growth story. More durable growth came from converting acquired capabilities into recurring managed services, cloud and application modernization, data and AI services, cybersecurity, industry solutions and broader client relationships. That’s a near-exhaustive list, and TBR’s most consistent advice has been that companies should do what they do well and only what they do well. But a consistent pattern emerges from that list: acquire capabilities, package those capabilities into differentiated offerings, cross-sell through partners and existing accounts, and deliver through recurring or managed services models. Easy, right?
Which overall strategies produced growth over the last few years, especially in IT services and consulting?
Acquisitions generated the most visible short-term revenue increases when companies added one or more of four assets: an existing client base that could be cross-sold existing offerings; specialized capabilities in cloud, data, AI, IT engineering or cybersecurity; that magical blend of credible global reach and authentically local presence; and recurring managed services, business process or subscription revenues. No company acquires like Accenture, but that simply means the 800,000-pound gorilla exemplifies the serial-acquisition model. Accenture’s investment capacity allows it to spend ahead of peers, add capabilities continually and enter adjacent markets. When looking at Accenture and its peers, TBR’s analysis distinguishes between lower-risk consulting acquisitions, which usually center on relationships and near-term revenue, and higher-risk AI platform and data acquisitions, which promise differentiation but have less-certain returns. By the start of 2026, industry-specific AI, data engineering and AI infrastructure had become central acquisition priorities across IT services companies and consultancies. Notably, many people lump mergers and acquisitions together, despite the significant difference. In our analysis since late 2021, mergers produced some of the highest reported growth rates, although the first-year results were often more inorganic than operational. For example, NTT DATA’s addition and integration of NTT Ltd. materially boosted 2023 revenue and expanded NTT DATA’s ability to sell integrated networking, data center, infrastructure and IT services. By 2025, closer alignment with parent NTT was creating additional cross-selling opportunities, stronger financial backing and a more unified enterprise proposition.
New offerings provided strong organic growth, with the most successful new offerings addressing work that clients could not defer indefinitely. Long-duration application, infrastructure and business process contracts produced more predictable revenue than discretionary consulting. During the last few years, the Big Four significantly expanded managed services and transaction services to protect client relationships and compete beyond advisory work. Application management, hybrid cloud, SAP modernization and platform engineering also generated significant revenues even when IT directors complained about tight digital transformation budgets (see TBR’s Digital Transformation: Voice of the Customer Research for details). Of course, new AI capabilities generated new revenues, especially when IT services companies and consultancies connected AI to data modernization, operating efficiency and industry workflows, not just isolated proofs of concept. For example, HCLTech’s AI Factory, Physical AI and data intelligence offerings contributed to its strongest growth since 2023. In addition, cybersecurity — in which companies perennially underinvest — as well as sovereign cloud and localized delivery, shifted from optional growth areas to required capabilities, particularly in Europe and among regulated industries.
In addition, strategic investments didn’t generate revenue spikes but remained essential for sustained growth. Training employees in hyperscaler platforms, generative AI, data engineering and industry skills helped IT services companies and consultancies execute increasingly complex, AI-enabled programs. At the same time and, for the leading companies tightly correlated, structured and strategic relationships with the hyperscalers, software vendors and semiconductor companies expanded market access while reducing the cost of building capabilities internally. Over the last few years, Accenture, Capgemini, HCLTech, IBM Consulting and the Big Four increasingly used partnerships to create multiparty offerings. And AI-enabled delivery, agent frameworks and reusable assets improved productivity and allowed IT services companies and consultancies to package services more consistently. Notably, according to TBR’s analysis, AI adoption by IT services companies and consultancies continues to contribute more to productivity and scope expansion than to broad-based revenue acceleration.
The next winning strategy
Since October 2021, traditional global systems integrators have generally produced steady single-digit growth. Accenture, Cognizant, HCLTech, Infosys and Tata Consultancy Services have stayed in the top 10 for year-to-year revenue growth in TBR’s IT Services Vendor Benchmark as their large-deal pipelines, installed client bases, partner ecosystems and managed services exposure have provided greater revenue stability.
In the same period, IT services companies and consultancies have derived the fastest growth from changing the revenue mix, not simply adding more people: recurring services instead of projects, industry solutions instead of generic capabilities, platforms and AI-enabled delivery instead of labor-only delivery, and acquisitions that could be cross-sold rather than merely consolidated. That has been the winning strategy for the last few years.
Will it remain a winning strategy for 2027 and beyond? AI might upend significant parts of the technology stack and force disruption of every company’s business model, but playing to strengths, doing only what you do well, and staying flexible in your commercial model will likely remain core attributes of leading IT services companies and consultancies.