186 providers tracked
Best Cloud Migration & Strategy Providers 2026
Compare 186 cloud migration consulting firms specialising in AWS, Azure, and Google Cloud workload migration, application modernisation, and hybrid cloud architecture. Profiles include hyperscaler partnership tiers, vertical specialisation, and verified buyer ratings. No provider pays for placement.
How to choose a cloud migration provider
Cloud migration projects fall into three distinct categories: lift-and-shift rehosting, replatforming (changing managed services or databases), and refactoring for cloud-native architecture. Selecting the wrong partner for the wrong type of migration is the most common cause of overruns. The four global SI firms — Accenture, Deloitte, Capgemini, and Infosys — dominate complex multi-region migrations but charge a premium. Mid-market buyers should evaluate Slalom and 2nd Watch for AWS workloads and Avanade for Azure.
Procurement teams should verify hyperscaler partnership status (AWS Premier, Azure Expert MSP, Google Cloud Premier) and request named consultant CVs rather than firm-level credentials. Migration cost models split into three layers: discovery and assessment (typically 4-12 weeks, $80k-$400k), migration execution (per-workload basis), and post-migration optimisation. Fixed-fee engagements remain rare; most providers operate on T&M with capped not-to-exceed clauses.
Workload assessment tools have converged on a small number of platforms (AWS Migration Hub, Azure Migrate, CloudGenera, Cloudamize). Providers using proprietary assessment platforms should be questioned on data portability when the engagement ends. For hybrid and regulated workloads, see our guide on disaster recovery services and review cloud infrastructure platforms before selecting a target environment.
Frequently Asked Questions
How much does an enterprise cloud migration typically cost?
Enterprise cloud migrations range from $500,000 for a single business unit to $50M+ for a full data centre exit. A typical 200-workload migration over 12 months runs $2-6M in consulting fees, excluding hyperscaler infrastructure costs. The largest cost driver is the number of refactored applications, not the number of servers migrated.
Should we use the same firm for migration and managed services afterwards?
Splitting these vendors is common practice. Migration firms optimise for project completion; managed services firms optimise for run-cost. Using one firm for both creates a conflict of interest around how much is refactored. See
managed IT services providers for ongoing operations after the migration completes.
How do we evaluate hyperscaler partnership tiers?
AWS Premier, Azure Expert MSP, and Google Cloud Premier require audited service delivery, certified staff counts, and customer references. These tiers signal scale but not necessarily fit. A boutique firm with 50 AWS-certified engineers may outperform a generalist with Premier status. Ask for project case studies in your specific industry.
What is the typical timeline for a 200-server migration?
Discovery and assessment: 8-12 weeks. Wave-based migration of 200 servers: 6-9 months. Post-migration optimisation: 3-6 months. Compressed timelines below this almost always result in over-provisioning and higher steady-state costs.
Do providers offer fixed-fee cloud migration?
Genuine fixed-fee migrations are rare and usually limited to lift-and-shift waves with strict scope definitions. Most providers offer 'capped T&M' where time-and-materials billing has a not-to-exceed ceiling. Expect 15-25% contingency on top of the base estimate.