Digital Transformation Services

In 2019 Forrester evaluated fifteen providers in this market. A year later it evaluated ten, and seven of the fifteen were gone.

The seven that disappeared were Atos, Cognizant, DXC Technology, IBM, Infosys, Tata Consultancy Services, and Wipro. Every one is a technology services firm with substantial delivery capability. In their place arrived Boston Consulting Group and Globant.

That single edit is the clearest statement anyone has made about what digital transformation actually is. Forrester removed the firms that build things and kept the firms that decide what to build, and its framing was explicit that this is CEO-level enterprise transformation, because changing a business model to embrace digital capabilities requires fundamental change in business strategy.

By 2023 the list was back up to fifteen. The category has never settled, and that instability is the honest subject of this article.

What the category is supposed to cover

Forrester's definition of the market described providers bringing a portfolio of transformation capabilities to help clients harness digital assets, skills, and ecosystems.

Unpack that and it covers a wider span than any adjacent services category. Business model redesign and strategy. Customer experience design. Technology architecture and platform selection. Operating model and organisational change. Talent and capability building. Delivery of the resulting programme, sometimes over several years.

The problem is visible in the list. Those activities span strategy consulting, design agencies, systems integration, and change management, which are four different businesses with four different economic models. A market defined to include all of them will contain firms that barely compete with each other.

Which is why the vendor list has swung so violently between editions. Forrester has not been changing its mind about who is good. It has been changing its mind about which of those four businesses the category is really about.

Four names in six years

The lineage is worth laying out because each rename encodes a different answer.

The Forrester Wave: Global Digital Business Transformation Accelerators, Q1 2019, authored by Nigel Fenwick, scored fifteen providers against twenty four criteria: Accenture, Atos, Capgemini, Cognizant, Deloitte, DXC Technology, EY, IBM, Infosys, KPMG, McKinsey & Company, Publicis Sapient, PwC, Tata Consultancy Services, and Wipro. Addressed to CIOs.

Accelerators is a revealing word. It positions the provider as speeding up something the client is already doing, which is a supporting role rather than a leading one.

The Forrester Wave: Digital Business Transformation Services, Q4 2020, also by Fenwick, scored the ten described above against thirty criteria, addressed to CIOs, CTOs, and digital leaders. Boston Consulting Group and Globant joined; the seven technology services firms left.

BCG placed as a Leader, and was the only vendor taking the highest possible score in all three subcriteria of business strategy consulting: business strategy, strategy optimisation, and business model innovation. Forrester described it as rapidly building disruptive digital business models with a focus on measurable outcomes, and noted its strategy was heavily oriented around time to value.

The Forrester Wave: Digital Transformation Services, Q4 2023 dropped Business from the name and scored fifteen providers against twenty one criteria, addressed to transformation leaders. Criteria down by nine from 2020, vendor count up by five.

The Forrester Wave: Digital Transformation Services, Q3 2025 scored roughly a dozen providers across strategy, capabilities, and customer experience.

Read the sequence and the pattern is a category oscillating between two definitions. When it is defined narrowly around business model change, the strategy houses dominate and the list shrinks. When it is defined around delivering transformation programmes, the technology services firms return and the list grows.

Neither definition is wrong. But a buyer citing a Leader placement without knowing which edition and which definition it came from is citing something considerably less specific than they think.

Inside The Forrester Wave: Digital Transformation Services, Q3 2025

McKinsey placed as a Leader with above-average customer feedback, and its citation contains the most consequential prediction in the current research.

Forrester recorded McKinsey's strategy as resting on a forecast that basic technology skills will commoditise and client demand will shift from technology implementation toward reinvention of how value flows through a business. Its talent strategy focuses on technology practitioners who carry credibility with senior management, with firm-wide upskilling in AI, and its innovation pipeline invests in codifying domain expertise into AI solutions and augmenting consultant delivery through internal accelerators and data assets.

Forrester separately credited its technology and data architecture capabilities, noting sophisticated diagnostics and continuous future-state design across verticals. A reference customer's comment, that the firm is willing to challenge them rather than agree, was cited in the customer feedback assessment.

KPMG placed as a Strong Performer, recognised for a clear and differentiated vision backed by an ambitious innovation roadmap, and singled out for transformation governance and risk management.

That KPMG citation is worth noting because governance and risk is an unfashionable thing to lead with in a market that sells reinvention. It is also the capability most likely to matter when a multi-year programme runs into trouble, which most of them do.

The prediction that reframes the category

Take McKinsey's forecast seriously for a moment, because Forrester chose to record it as the firm's differentiating strategy rather than as marketing.

Basic technology skills commoditising is not a controversial claim any more. Code generation, infrastructure automation, and increasingly agentic delivery are compressing exactly the work that filled offshore delivery centres. If that continues, the labour arbitrage that built several of the firms in the 2019 vendor list stops being a durable advantage.

What replaces it, in that view, is reinvention of value flow, meaning how a business actually creates and captures value rather than which systems it runs.

If that prediction holds, the 2020 vendor cut was early rather than wrong. Forrester removed the delivery-heavy firms from a strategy-defined category five years before the economics of delivery came under pressure, and the 2023 restoration of a broader list may turn out to be the anomaly.

The counter-argument is straightforward and also credible. Strategy is cheap to produce and always has been. What organisations struggle with is execution across hundreds of systems and thousands of people, and that difficulty does not disappear because code becomes cheaper to write. Somebody still has to migrate the data, retrain the staff, and keep the business running through the change.

Both things can be true, which is why this category keeps oscillating.

What clients actually told Forrester

The most useful document attached to the current evaluation is not the Wave. It is the companion trend report published in December 2025, drawn from interviews with twenty five enterprise clients about their transformation journeys during what Forrester describes as a period of significant genAI-induced market change.

Reference-driven research of this kind is consistently more informative than tier placements in services categories, because in a market where fifteen large firms all have credible capability, the differences that matter show up in how engagements actually run rather than in capability matrices.

It also points at the real question hanging over this category, which is what happens to transformation programmes when the technology landscape shifts faster than the programme can deliver.

A traditional transformation runs three to five years. A programme scoped in 2023 around a target architecture, an operating model, and a set of platform decisions is now delivering into a world where several of those decisions have been overtaken. The client is midway through, has spent substantially, and is being asked whether to continue or re-scope.

That situation is uncomfortable for everyone involved and it is the defining commercial dynamic in this market right now. It also creates an obvious incentive problem: a provider mid-programme has revenue attached to the original scope, and re-scoping is a conversation nobody initiates comfortably.

The label is dissolving

Here is the argument the current research points toward without stating.

Digital transformation as a distinct category made sense when digital was a thing an organisation adopted. Websites, mobile, cloud, data platforms, customer experience: a set of capabilities that a traditional business needed to acquire and integrate.

That framing is losing meaning for the same reason nobody sells electrification consulting. When the technology is ambient, transformation stops being about adopting it and becomes about what the organisation does differently, which is just called strategy.

At the same time, the specific transformation everyone is actually funding has a different name. Forrester now maintains distinct categories for AI consulting services, AI technical services, agentic development platforms, and adaptive process orchestration. The budget, the analyst attention, and the vendor positioning have all moved to that vocabulary.

Which puts digital transformation services in an odd position. It remains a real market with real buyers and a current Forrester Wave. It is also a category whose distinguishing concept has been absorbed by both a broader idea, strategy, and a narrower one, AI transformation.

The 2019 name may end up having been the most accurate of the four. These firms accelerate change that a client has already decided to make. What they accelerate has changed several times in six years, and the category name has been chasing it ever since.

Forrester does not endorse any provider named here, and tier placement should not be read as a recommendation to buy.