8 Best Cloud Migration Consulting Companies (2026)
Cloud migration consulting can cover everything from an initial infrastructure assessment and workload roadmap to application modernization, deployment automation, and ongoing cloud operations. The companies below approach this work from different angles, including dedicated cloud consulting, custom software engineering, legacy modernization, and platform development.
1. OSKI Solutions
OSKI Solutions provides cloud migration consulting built around assessment, architecture, migration planning, and hands-on engineering. Before workloads move, the team can inventory applications, data stores, integrations, and infrastructure dependencies, then assign migration strategies such as rehosting, replatforming, refactoring, retiring, or retaining individual workloads. The consulting scope also covers TCO modeling, landing-zone design, migration waves, governance, security, and FinOps.
OSKI can continue from planning into execution, which is useful when a migration involves legacy application modernization rather than a straightforward infrastructure transfer. Its cloud and DevOps work spans AWS, Microsoft Azure, and Google Cloud, with Terraform, Docker, Kubernetes, CI/CD, monitoring, and infrastructure-as-code incorporated into delivery.
Key Facts
- Best for: Organizations needing cloud assessment, migration planning, and implementation
- Core services: Cloud migration consulting, workload assessment, migration roadmaps, cloud architecture, DevOps, FinOps
- Cloud platforms: AWS, Microsoft Azure, Google Cloud
- Technologies: Terraform, Docker, Kubernetes, CI/CD
- Location: Tallinn, Estonia
- Notable strength: Consulting and migration execution handled within the same engineering practice
Contact Information
- Website: oski.site
- Phone: +48571282759
- Email: contact@oski.site
- Address: Kaupmehe tn 7-120, 10114 Tallinn, Estonia
- LinkedIn: www.linkedin.com/company/oski-solutions
2. A-Listware
A-Listware combines cloud consulting with infrastructure management, software development, DevOps, and managed IT services. Its cloud work includes infrastructure assessment, cloud deployment, application migration, cloud services integration, resource optimization, and management of environments using AWS, Azure, and other platforms. The company can also modernize applications while infrastructure is being moved, rather than treating migration as an isolated hosting exercise.
This broader engineering scope makes A-Listware relevant for organizations with legacy applications, databases, integrations, or internal systems that need technical changes alongside the cloud transition. Delivery can continue after migration through cloud monitoring, infrastructure management, application support, managed DevOps, and security services.
Key Facts
- Best for: Cloud migration combined with outsourced software engineering
- Core services: Cloud consulting, cloud migration, infrastructure management, DevOps, application modernization
- Cloud platforms: AWS, Microsoft Azure, other cloud environments
- Delivery models: Dedicated teams, managed delivery, time and material
- Location: UK and USA
- Notable strength: Covers both cloud infrastructure and application-level modernization
Contact Information
- Website: a-listware.com
- Phone: +1 (888) 337 93 73
- Email: info@a-listware.com
- Address: North Bergen, NJ 07047, USA
- LinkedIn: www.linkedin.com/company/a-listware
- Facebook: www.facebook.com/alistware
3. Gilzor
Gilzor approaches cloud migration through its broader custom software and product engineering practice. Its cloud-related work includes infrastructure planning, cloud deployment, migration support, DevOps automation, and the modernization of existing applications. AWS, Docker, Kubernetes, CircleCI, GitHub Actions, and other delivery technologies appear across its development and support stack.
The company is particularly relevant when migration is connected to a web or mobile product that still needs active development. Legacy technology can be updated alongside cloud deployment, while architecture, QA, integrations, release processes, and post-launch maintenance remain within the same engagement. This gives Gilzor a more product-centered role than a consultancy focused exclusively on infrastructure assessment.
Key Facts
- Best for: Product companies combining migration with application development
- Core services: Cloud deployment, migration support, DevOps, custom software development, technical consulting
- Technologies: AWS, Docker, Kubernetes, CircleCI, GitHub Actions
- Location: Warsaw, Poland and Limassol, Cyprus
- Notable strength: Connects cloud work with the wider web and mobile development lifecycle
Contact Information
- Website: www.gilzor.com
- Email: contacts@gilzor.com
- Address: Poland, Warsaw, Office 58, street Adama Mickiewicza 37, 01-625
- LinkedIn: www.linkedin.com/company/gilzor-softwaredevelopment
4. NET Developers
NET Developers works on cloud-native architecture and platform engineering across Microsoft Azure, AWS, and Google Cloud. Its cloud practice includes infrastructure-as-code, platform engineering, application architecture, production deployment, and the modernization of enterprise systems. Terraform and Kubernetes are part of the company's stated cloud and platform technology set.
For migration projects, this engineering profile is useful when applications need refactoring or architectural changes before they can operate effectively in a cloud-native environment. Senior engineers lead delivery and can work across .NET, JVM, Node.js, Python, and Go systems, which reduces dependence on a single technology stack when an estate contains multiple applications. Production deployment and continued iteration are included in the delivery process.
Key Facts
- Best for: Enterprise application modernization and cloud-native platform work
- Core services: Cloud architecture, infrastructure-as-code, platform engineering, enterprise development
- Cloud platforms: Microsoft Azure, AWS, Google Cloud
- Technologies: Terraform, Kubernetes, .NET, JVM, Node.js, Python, Go
- Location: Warsaw, Poland
- Notable strength: Senior-led engineering across multiple enterprise technology stacks
Contact Information
- Website: net-devs.com
- Phone: +48 571 282 759
- Email: contact@net-devs.com
- Address: Obrzeżna 1D, 02-691 Warszawa
- LinkedIn: www.linkedin.com/company/net-devs
5. Itexus
Itexus handles cloud adoption and migration in the context of broader software modernization and digital transformation projects. Its work can involve moving infrastructure to the cloud, modernizing legacy platforms, restructuring integrations, and introducing new technologies into existing business systems. That makes the company most relevant when a migration decision affects application architecture as much as hosting or infrastructure.
Itexus also works extensively with fintech software, where cloud decisions may need to account for security, integrations, data handling, scalability, and business continuity. Its engineering-led model allows cloud migration to sit alongside backend development, platform modernization, integration work, and continued product development instead of being handed off after the initial move.
Key Facts
- Best for: Cloud migration connected to software modernization and fintech systems
- Core services: Cloud adoption, legacy modernization, custom software development, integrations
- Specialization: Fintech and business-critical software
- Delivery model: Software engineering and technology consulting
- Notable strength: Migration work can be integrated into a wider digital transformation project
Contact Information
- Website: itexus.com
- Email: info@itexus.com
- Address: 8, The Green, STE road, Dover, DE 19901, United States
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
6. SoftPro
SoftPro provides cloud development and migration services with a strong focus on AWS and Microsoft Azure. Its migration capabilities include moving infrastructure, applications, and data from on-premises environments or between cloud platforms. The company supports lift-and-shift projects, containerization, infrastructure management, and cloud-native re-architecture for legacy enterprise systems.
Cloud migration can also be combined with SoftPro's custom software development and modernization work. Its technical stack centers heavily on .NET, ASP.NET Core, C#, Azure, React, and modern JavaScript technologies, making the company particularly relevant to businesses moving older Microsoft-based applications toward more modern cloud environments. Hybrid and multi-cloud approaches are also included in its cloud development offering.
Key Facts
- Best for: Microsoft-oriented application and infrastructure migrations
- Core services: Cloud migration, cloud-native development, application modernization, infrastructure management
- Cloud platforms: Microsoft Azure, AWS
- Technologies: .NET, ASP.NET Core, C#, React, Node.js
- Location: Warsaw, Poland
- Notable strength: Combines legacy software modernization with cloud migration
Contact Information
- Website: soft-pro.pl
- Address: 13 Erasmus Ciołka St. 401, Warsaw, Poland
7. Mobian
Mobian supports cloud migration primarily through application modernization, legacy integration, backend engineering, and cloud-connected product development. Its teams work with AWS, Microsoft Azure, and Google Cloud environments while building or updating software that needs to operate reliably after migration. Instead of requiring an immediate replacement of every existing component, the company can connect newer cloud-based services with established systems and APIs.
Mobian operates through outsourcing and outstaffing models. Cloud-related work can therefore be delivered by a complete external team or by engineers embedded into an existing development organization. The company also provides post-launch support, which is relevant when migrated applications require continued monitoring, scaling, maintenance, and feature development.
Key Facts
- Best for: Application-focused migrations and legacy integration
- Core services: Cloud application development, backend development, APIs, legacy integration, software engineering
- Cloud platforms: AWS, Microsoft Azure, Google Cloud
- Delivery models: Outsourcing and outstaffing
- Location: Tallinn, Estonia
- Notable strength: Migration work closely connected to ongoing product engineering
Contact Information
- Website: mobian.studio
- Email: info@mobian.studio
- Address: Harju maakond, Tallinn, Kesklinna Linnaosa, Masina tn 22, 10113
- LinkedIn: www.linkedin.com/company/mobian-studio
8. 21century.tech
21century.tech is most relevant to cloud migration projects at the application modernization and deployment stage. Its engineering work includes legacy refactoring, full-stack feature development, third-party integrations, automated testing, CI/CD, documentation, and production deployment. Applications can be deployed into client infrastructure or infrastructure managed as part of the delivery setup.
The company's model centers on senior engineers using AI-assisted development while retaining human responsibility for architecture, review, testing, and production decisions. For cloud migration, this can fit projects where an older application needs substantial refactoring before or during the move. The offering is less centered on standalone infrastructure advisory work and more on making production software ready for modern deployment environments.
Key Facts
- Best for: Application modernization within a wider cloud migration program
- Core services: Legacy refactoring, software development, integrations, CI/CD, testing, production deployment
- Delivery model: Remote-first
- Location: Miami, USA
- Notable strength: Focused on modernizing and deploying production applications
Contact Information
- Website: 21century.tech
- Email: kirill@oski.site
Conclusion
Cloud migration consulting is rarely just about moving applications and data from one environment to another. The real work often sits around that move: deciding what should be migrated, what needs refactoring, how dependencies will be handled, and what the target cloud architecture should look like once everything is running.
The strongest fit depends heavily on the starting point. Some projects need detailed assessment and migration planning, while others require deeper application modernization, DevOps automation, security work, or ongoing cloud operations. Looking closely at technical capabilities, platform experience, modernization expertise, and post-migration support helps separate a straightforward infrastructure provider from a consulting partner capable of handling the wider transition. A well-planned migration should leave the technology environment easier to manage, scale, and develop, not simply hosted somewhere new.
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