Top 10: Cloud Migration Consultants

The data centre ecosystem is undergoing a monumental shake-up.

As hyperscale demand intensifies and high-density AI workloads are completely rewriting the rules on power and cooling, enterprise operators can no longer rely on lift-and-shift methods.

Legacy systems require radical modernisation to interface seamlessly with distributed cloud topologies. This requires deep systems architecture knowledge and complex multi-cloud orchestration.

Selecting the right partner is critical for data centre leaders to bridge the gap between on-premises physical assets and public infrastructure.

Here, we profile the a selection of the consultants driving this transformation.

10. NTT Data

CEO: Abhijit Dubey
Founded: 1988
Location: Tokyo, Japan

Operating at the critical intersection of IT consulting and global digital infrastructure, NTT Data harnesses its parent company's massive global data centre footprint to deliver highly integrated hybrid cloud solutions.

The firm excels in migrating complex, legacy workloads for multi-billion-dollar enterprises.

It ensures that compute resources are optimally balanced across private networks and public hyperscalers.

This infrastructure-centric approach makes them a preferred migration partner for organisations that require ultra-low latency connections and robust operational business continuity.

9. Cognizant

CEO: Ravi Kumar S
Founded: 1994
Location: New Jersey, US

Cognizant focuses heavily on data modernisation and application refactoring during the cloud transition process.

By embedding automated frameworks and generative AI tooling into their migration pipelines, the firm rapidly accelerates cloud-native development for global clients.

Cognizant addresses the AI velocity gap by restructuring legacy databases into clean, accessible architectures suitable for modern public cloud environments.

This targeted approach dramatically slashes the time-to-value for enterprise data migrations, allowing operators to deploy advanced analytical tools immediately post-transition.

8. Infosys

CEO: Salil Parekh
Founded: 1981
Location: Bengaluru, India

Driven by its comprehensive Infosys Cobalt portfolio, this digital services giant provides a vast repository of pre-configured cloud-native blueprints and design patterns.

Infosys allows enterprises to build highly secure, scalable multi-cloud platforms across AWS, Azure and Google Cloud.

The consultancy focuses heavily on complex financial engineering, providing deep visibility into post-migration cloud spend.

This emphasis on FinOps, coupled with their vast global talent pool, ensures that large-scale infrastructure overhauls remain highly cost-efficient and structurally optimised.

7. TCS

CEO: K. Krithivasan
Founded: 1968
Location: Mumbai, India

Tata Consultancy Services (TCS) utilises its proprietary Cloud Enterprise Navigator to guide Fortune 500 companies through intricate architectural transformations.

TCS brings unparalleled experience in handling monolithic legacy estates, systematically breaking down complex application architectures into nimble, cloud-native microservices.

Their deep domain expertise across heavily regulated sectors, such as banking, healthcare, and public utilities, ensures that every migration protocol complies with national sovereignty regulations and strict data residency mandates without sacrificing overall workload performance.

6. Capgemini

CEO: Aiman Ezzat
Founded: 1967
Location: Paris, France

With a powerful European heritage and a deeply ingrained focus on digital sovereignty, Capgemini is a standout partner for industries navigating complex regulatory landscapes.

The firm specialises in high-stakes environment separations, notably orchestrating the massive IT separation of National Gas from National Grid.

By safely migrating over 43 million data objects and modernising 30 critical apps into a secure multi-cloud setup, they proved their capability in zero-downtime infrastructure splits.

Capgemini also incorporates sustainability metrics directly into its migration planning, helping tech leaders align compute-heavy cloud strategies with strict corporate net zero targets.

5. EY

CEO: Janet Truncale
Founded: 1989
Location: London, UK

Ernst & Young (EY) approaches cloud migration through the lens of comprehensive business transformation and regulatory risk management.

The firm excels at building complex migration strategies for clients operating in highly volatile compliance environments.

By closely aligning cloud architecture with global supply chain dependencies and strict financial workflows, EY ensures that technological transformation directly drives measurable corporate value while mitigating operational risk and maintaining full compliance with evolving multi-jurisdictional legal standards.

4. PwC

CEO: Paul Griggs
Founded: 1998
Location: London, UK

PwC delivers a business-led approach to technology infrastructure, ensuring cloud migrations are directly tied to tangible commercial outcomes.

The firm specialises in complex cloud sovereignty, corporate cybersecurity frameworks and rigorous risk assurance.

PwC helps executive teams design secure cloud operating models that protect highly sensitive intellectual property.

By combining deep technical engineering capabilities with traditional corporate strategy, they enable seamless transitions that protect business continuity while modernising outdated internal data architectures and backend systems.

3. IBM Consulting

CEO: Arvind Krishna
Founded: 1911
Location: New York, US

IBM Consulting is the undisputed leader in complex hybrid cloud orchestration, harnessing the architectural flexibility of Red Hat OpenShift.

The consultancy specialises in environments where total reliance on the public cloud is impossible due to security or compliance constraints.

IBM excels at constructing highly secure containerised environments that allow critical workloads to move dynamically between on-premises mainframes and multiple public cloud providers.

This specialised focus makes them indispensable for global banks, government agencies and critical infrastructure operators.

2. Deloitte

CEO: Joe Ucuzoglu
Founded: 1845
Location: London, UK

Deloitte operates a massive, multi-disciplinary cloud consulting practice that seamlessly bridges the gap between high-level corporate strategy and deep, end-to-end technical execution.

Through its global network of Cloud Innovation Centres, the firm designs, builds and manages sophisticated multi-cloud architectures tailored for large enterprises.

Deloitte commands close strategic alliances with all major hyperscale providers, enabling them to deliver deeply integrated solutions that encompass advanced data analytics, AI implementation and comprehensive workforce transformation.

Their migration methodologies focus heavily on building long-term operational resilience.

Deloitte systematically restructures an organisation’s internal operating model, upskilling legacy IT teams to manage modern cloud-native infrastructures effectively.

This comprehensive focus on both technical architecture and organisational readiness ensures that multi-million-dollar migration investments deliver sustained financial performance, tight cost controls and agility in highly competitive global markets.

1. Accenture

CEO: Julie Sweet
Founded: 1989
Location: Dublin, Ireland

Accenture stands at the absolute pinnacle of the cloud migration sector, backed by its monumental Accenture Cloud First division.

This specialised unit represents a multi-billion-dollar investment dedicated entirely to accelerating enterprise cloud journeys.

The company offers unmatched scale, deep industry-specific migration blueprints and an unparalleled array of data engineering capabilities.

Accenture excels at orchestrating massive, highly complex migrations for the world's largest organisations, frequently moving hundreds of legacy applications simultaneously while maintaining uninterrupted global business operations.

Beyond core infrastructure migration, Accenture integrates advanced generative AI automation directly into the transition lifecycle.

This systematically compresses project timelines and drastically reduces human error.

By combining deep technical systems integration with profound industry insights across dozens of distinct sectors, Accenture does not merely lift and shift data centre workloads.

Instead, they completely reimagine them, positioning the cloud as an ongoing engine for continuous business reinvention and rapid digital scaling.