Global consulting and IT services leader providing comprehensive cloud migration and transformation services across all major platforms.
Top Rated15+ YearsEnterprise
Cloud Migration & ModernizationLegacy ModernizationThe Top 10
The absolute best in cloud migration & modernization
Open source leader providing cloud migration consulting with expertise in hybrid cloud, containers, and Kubernetes-based transformations.
Top Rated15+ YearsEnterprise
Cloud Migration & Modernization
Global professional services company with 700,000+ employees providing comprehensive cloud migration strategy, implementation, and management services.
Top Rated15+ YearsEnterprise
Cloud Migration & ModernizationApp Modernization & Legacy Migration
Global IT services company with extensive cloud migration practice, serving businesses with secure workload transitions across all major platforms.
Top Rated15+ YearsEnterprise
Cloud Migration & ModernizationApp Modernization & Legacy Migration
Big Four professional services firm providing comprehensive cloud migration and digital transformation services across all major cloud platforms.
Top RatedEnterprise
Cloud Migration & ModernizationLegacy Modernization
Global consulting leader with comprehensive cloud migration services across AWS, Azure, Google Cloud, and Oracle, specializing in enterprise transformations.
Top Rated15+ YearsEnterprise
Cloud Migration & ModernizationApp Modernization & Legacy Migration
Leading global IT services company with robust cloud migration practice spanning strategy, execution, and managed services.
Top Rated15+ YearsEnterprise
Cloud Migration & ModernizationLegacy Modernization
Global IT services company with comprehensive cloud migration capabilities backed by NTT Group resources and extensive industry experience.
Top Rated15+ YearsEnterprise
Cloud Migration & Modernization
Global professional services firm with extensive cloud migration expertise, partnering with AWS, Azure, and Google Cloud for enterprise transformations.
Top Rated15+ YearsEnterprise
Cloud Migration & ModernizationApp Modernization & Legacy Migration
Global IT services leader with extensive cloud migration capabilities, offering secure and scalable solutions for enterprise transformations.
Top Rated15+ YearsEnterprise
Cloud Migration & ModernizationTop 10 Cloud Migration & Modernization Agencies — FAQ
Common questions about the best cloud migration & modernization agencies.
Who is the #1 cloud migration & modernization agency in the USA in 2026?
As of 2026, the top-ranked cloud migration & modernization agency in the USA on AgencyCluster is Capgemini, with an AgencyCluster Score of 100/100. Rankings are based on verified evidence across credibility, proof of work, reputation, category specialization, delivery maturity, and freshness. Rankings are updated periodically as new evidence becomes available.
How were the top 10 cloud migration & modernization agencies in the USA selected?
This list features 10 agencies selected from AgencyCluster's curated directory. Each agency was evaluated using the AgencyCluster Score (0–100), with particular weight on demonstrated expertise in cloud migration & modernization. Only agencies with verified credentials are eligible, and rankings cannot be purchased. The agencies on this list average 49+ years of experience. For full methodology details, see our How We Rank page.
What should I look for when choosing a cloud migration & modernization agency from this list?
Ask about their migration methodology and how they assess which workloads to rehost, refactor, or rebuild. Check their experience with your source and target platforms. Ask about their approach to minimizing downtime during migration and how they handle data migration for large datasets.
How much do the top cloud migration & modernization agencies typically charge?
Cloud readiness assessments cost $15K–$50K. Application migration projects range from $50K–$300K per major system. Enterprise-wide cloud transformation programs can exceed $500K. Post-migration optimization runs $10K–$30K/month.
Trusted Rankings
Every agency on this list has been reviewed by our editorial team. Rankings are based on our transparent methodology which evaluates credibility, outcomes, and reputation.
No paid rankingsVerified credentialsUpdated regularly
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