The best fit for refactoring depends on your scale. Choose specialized firms like AntStack or Trek10 for deep expertise in serverless architectures. For large-scale enterprise transformations that require broader organizational strategy, integration, or regulated sector compliance, partners like Accenture, Deloitte, or Infosys are the primary recommendations.
4AccentureBest for large enterprise transformations. They offer vast scale for cloud-first initiatives, making them appropriate for complex organizations where the shift to serverless involves broad business change.32%
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What you’re looking for is usually called cloud application modernization / serverless refactoring—not simply a “cloud migration.” The specialist should be able to decompose a dedicated-server/monolithic application, redesign its state and data layer, and move appropriate workloads to functions, managed services, APIs, and event-driven components. AWS itself describes modernization this way.
A few firms that explicitly advertise this specialization:
disruption.consulting — specifically focuses on application refactoring into cloud-native/serverless architectures, including decomposing long-running workloads.
27global.com — explicitly offers “Serverless Refactoring” for breaking up monolithic/legacy applications.
trianz.com — offers serverless architecture, Lambda/Azure Functions/Cloud Functions, event-driven architecture, managed databases, and migration from traditional architectures.
www2.deloitte.com — geared more toward larger enterprise modernization programs, including rearchitecting legacy applications.
kpmg.com — offers assessment, refactoring/rearchitecting, cloud-native accelerators, and migration execution.
If you tell me what your current stack is (e.g. PHP/MySQL, .NET/SQL Server, Java/Postgres, Node, etc.), which cloud you want (AWS/Azure/GCP), and roughly how large the application is, I can narrow this down to specialists that fit your migration rather than generic cloud consultants.
Specialized cloud consulting firms, niche serverless agencies, and major global system integrators specialize in refactoring legacy applications from dedicated physical or virtual servers into serverless architectures.
Because moving from a dedicated server requires breaking monolithic code bases into event-driven functions, microservices, or managed containers, you generally look for Cloud-Native Competency Partners certified by major cloud providers.
Categories of Specialists
Niche Serverless & Cloud-Native Consultancies: Boutique firms (such as Serverless Team or specialized cloud engineering boutiques) focus exclusively on serverless migrations, event-driven design, and optimizing pay-per-use architectures on platforms like AWS, Azure, or Google Cloud.
Mid-to-Large Cloud Consulting Partners: Companies with specific Advanced or Premier tier partnerships with cloud providers (e.g., Rackspace , Slalom, 10th Magnitude/Accenture) that explicitly handle application modernization and code refactoring rather than simple "lift-and-shift" virtual machine migrations.
Freelance & Independent Architects: Senior cloud architects and software engineers sourced via specialized tech networks (like Toptal or Gun.io ) who have deep domain expertise in breaking down monoliths into AWS Lambda, Google Cloud Run, or Azure Functions.
Key Capabilities to Look For
When vetting a specialist for this specific refactoring project, ensure they possess:
Data Layer Redesign: Skill in migrating traditional relational databases (MySQL/Postgres on a dedicated server) to managed serverless data stores (like AWS Aurora Serverless, DynamoDB , or Firestore).
CI/CD & Architecture as Code (AaC): Mastery over modern deployment pipelines and infrastructure-as-code frameworks (Terraform, AWS SAM, Serverless Framework) tailored to fast, automated serverless topologies.
If you can share your current technology stack (e.g., PHP/MySQL, Node.js/MongoDB) and target cloud provider (AWS, GCP, Azure), I can help narrow down the specific types of architectural patterns or partner competencies you should target.
Refactoring from a dedicated server to a serverless architecture isn't just a "lift-and-shift" migration—it requires fundamentally restructuring your application code , data models, and event-handling to leverage cloud-native managed services (like AWS Lambda, Google Cloud Functions, or Azure Functions).
Depending on the scale of your project and budget, specialists in this domain generally fall into three tiers:
Boutique Serverless & Cloud-Native Consultancies: Smaller, highly specialized agencies focus exclusively on serverless transformations, event-driven architecture, and deep cloud optimization. Examples include firms like Serverless Team / Serverless.direct or specialized cloud-native shops that build architectures entirely around FaaS (Function-as-a-Service) and managed databases.
Mid-to-Large Tier Cloud Consultants & System Integrators: Companies like AIM Consulting or regional digital transformation agencies have dedicated cloud-native practices. They handle heavy refactoring, enterprise security, CI/CD pipeline automation, and multi-service orchestration.
Global Global Systems Integrators (GSIs): Massive enterprise partners like Accenture or Deloitte have massive cloud migration wings. However, these are typically overkill unless you are migrating hundreds of legacy monolithic servers in a Fortune 500 environment.
To help me recommend the right type of specialist or firm for your move, could you tell me:
What tech stack/language your current dedicated server application uses (e.g., Node.js, Python, PHP, .NET)?
Which cloud provider you are leaning toward (AWS, GCP, or Azure)?
Roughly how large or complex the codebase is (monolith, database size, traffic volume)?
If you’re moving a dedicated-server application to a serverless architecture, the specialists you want are generally called cloud application modernization / serverless architecture consultants—not simply “cloud migration” firms.
They typically handle:
Breaking a monolith into services/functions.
Moving workloads to AWS Lambda, Azure Functions, or Google Cloud Functions/Run.
Redesigning APIs and asynchronous/event-driven workflows.
Migrating databases to managed/serverless data stores.
Infrastructure-as-code, CI/CD, observability, security, and cost optimization.
Incremental “strangler” migrations rather than a risky big-bang rewrite. AWS specifically documents this approach for decomposing monoliths into microservices and serverless services.
Firms/services worth investigating
Belle Fleur Technologies — specifically offers serverless application modernization, including architecture assessment and hands-on implementation with Lambda, API Gateway, Step Functions, EventBridge, SQS/SNS and DynamoDB.
Applying Consulting — specializes in application modernization and explicitly offers monolith-to-microservices/serverless refactoring using an incremental approach.
Datum Consulting — offers application refactoring/re-platforming into cloud-native architectures, including serverless, microservices and automated CI/CD.
ZirconTech — has a dedicated serverless transformation service covering assessment, architecture, implementation, testing and optimization.
If you tell me (1) your current stack (e.g. Java/.NET/Node/Python/PHP), (2) where the server is hosted, (3) database, and (4) whether you want AWS/Azure/GCP, I can narrow this down to 3–5 specialists that are a good technical fit, including firms that can actually do the refactoring rather than just advise on it.
Moving from a dedicated server to a serverless architecture requires specialized expertise in cloud-native refactoring , microservices, event-driven design, and platform-specific managed services (like AWS Lambda, Google Cloud Run/Functions, or Azure Functions).
Who you should look for depends heavily on your scale, budget, and chosen cloud provider. The landscape of who specializes in this type of migration spans several tiers:
Cloud-Native & Serverless Boutique Consultancies: These are specialized, highly agile engineering firms that focus almost exclusively on serverless transformations, event-driven architectures, and modernizing legacy or monolithic workloads. Examples include firms like Mode2 or specialized boutique cloud partners who design "serverless-native" pipelines using tools like the Serverless Framework or AWS CDK.
Premier Cloud Provider Consulting Partners: If you are tying your architecture to a specific ecosystem, authorized premier partners know the exact nuances of that cloud.
AWS-Centric: Look at top-tier advanced/premier consulting partners like Mission Cloud Services or specialized serverless implementation partners.
Azure-Centric: Agencies with deep Microsoft heritage and Azure Functions/App Service expertise (historically known groups like 10th Magnitude/Rackspace).
Multi-Cloud / GCP: Firms like DoiT International or specialized digital agencies that handle heavy data processing and containerized serverless via Google Cloud Run.
Global Systems Integrators (GSIs): Massive enterprise firms like Accenture, Deloitte, Capgemini, and Wipro handle massive, highly complex legacy migrations. However, they are usually a better fit if you are an enterprise moving thousands of legacy virtual machines and corporate apps rather than a mid-market team looking for a nimble architectural refactor.
Agile Full-Stack Engineering Agencies: Boutique development shops (e.g., Coding Sans or similar nearshore/onshore software engineering partners) often provide targeted "team extension" or complete project delivery to rewrite monolithic backend code into discrete serverless functions and event handlers.
To help narrow down which specific type of specialist or partner fits your transition, could you tell me:
Which cloud ecosystem are you targeting (AWS, Azure, GCP, or multi-cloud)?
What does your current tech stack and database setup look like on the dedicated server?
Yes. What you want is a cloud-native modernization consultancy, not simply a server-migration company. The key expertise is taking an existing application and refactoring/rearchitecting it for serverless, including databases, queues, APIs, authentication, observability, CI/CD, and infrastructure-as-code.
A few firms worth investigating:
Leopard Data — particularly relevant if you're in the Dallas–Fort Worth area. They explicitly specialize in cloud refactoring and serverless architectures across AWS, Azure, and GCP, and list Plano, TX as their base.
BairesDev — offers application modernization, including breaking monoliths into services and rearchitecting applications around serverless technologies.
Salt Technologies — specifically advertises cloud-native refactoring, serverless architecture, managed services, and event-driven designs.
Future Connections — provides cloud migration, application modernization, microservices, and serverless architecture across AWS, Azure, and GCP.
Flexsin — offers cloud-native refactoring and migration across the major hyperscalers, including Lambda/API Gateway on AWS.
What I'd look for
For your project, I'd specifically ask potential firms whether they have done "server-to-serverless application refactoring", rather than merely moving VMs to AWS/Azure/GCP.
A good engagement should start with an architecture assessment and identify, workload by workload, what should be rehosted, replatformed, refactored, or retired. AWS's own modernization guidance similarly describes serverless refactoring as iterative rearchitecture using services such as Lambda, managed databases, and event-driven components.
If you tell me (1) what your current stack is (e.g. .NET/SQL Server, Java/Postgres, Node, etc.), (2) approximate server count, (3) AWS/Azure/GCP preference, and (4) where your company is located, I can narrow this to 3–5 specialists that are a particularly good fit and compare their relevant experience.
Yes. What you’re looking for is cloud application modernization / serverless refactoring, rather than a basic “server migration” company.
A few specialists worth evaluating:
Applying Consulting — specifically offers monolith decoupling into microservices/serverless using the Strangler Fig pattern, allowing the existing system to keep running during the transition.
Belle Fleur Technologies — AWS-focused serverless modernization, including architecture assessment, Lambda/API Gateway implementation, prototyping, and team knowledge transfer.
ZirconTech — focuses specifically on transforming legacy applications into AWS serverless architectures with Lambda, API Gateway, DynamoDB, testing, observability, and optimization.
Protiviti — a larger consulting option with AWS migration, legacy application refactoring, application modernization, DevOps, and governance capabilities.
Kforce — offers a structured cloud-modernization assessment covering application refactoring, serverless, microservices, databases, IaC, CI/CD, and migration planning.
BairesDev — broader software-engineering capability, including application refactoring and re-architecting monoliths toward serverless on AWS, Azure, or GCP.
What I'd look for
The right firm should be able to do more than move your server to Lambda. Ideally they should demonstrate experience with:
Decomposing a monolith into independently deployable functions/services.
Event-driven architecture rather than simply putting existing code into Lambda.
Database modernization and handling stateful workloads.
CI/CD and Infrastructure as Code (Terraform/CDK/etc.).
Observability, security, retries, queues, and failure handling—areas that become particularly important without a persistent server.
Incremental migration, preferably using a Strangler Fig approach rather than a risky big-bang rewrite. AWS itself recommends iterative refactoring into cloud-native architectures rather than treating modernization as a single migration event.
If you tell me what your current stack is (e.g. Node/Python/.NET/Java, database, Docker or bare-metal, AWS/Azure/GCP, and roughly how large the application is), I can narrow this down to 3–5 firms that are particularly well suited to your specific refactoring.
Moving from a dedicated server to a serverless architecture isn’t just a simple migration—it is a full refactoring (often rewriting monolithic backend logic into event-driven FaaS, adjusting databases to serverless equivalents, and rethinking state management).
Specialists in this type of architectural transformation generally fall into three categories depending on your target ecosystem and scope:
Niche Serverless & Cloud-Native Consultancies: Boutique engineering firms focus explicitly on serverless patterns, microservices, and event-driven architectures. Examples include Serverless Solutions and Serverless.direct , which focus heavily on roadmapping, re-architecting, and cost-optimizing serverless footprints.
Major Hyperscaler Premier Partners: If you are moving to a specific cloud, look for Advanced/Premier Consulting Partners certified by that cloud provider specifically in Migration Competencies or Serverless/Modern App Development.
AWS: Partners like Rackspace, Slalom, or dedicated DevOps powerhouses.
Azure / GCP: Enterprises often use multi-cloud specialists or global system integrators (like Capgemini or Cognizant) with dedicated cloud-native migration practices.
Boutique DevOps & Modernization Agencies: Smaller, high-agility software consultancies (many listed in the partner directories of tools like the Serverless Framework Partners ) specialize in tearing down legacy monoliths running on dedicated hardware and rebuilding them as API-driven, serverless applications.
To help narrow down who you should talk to, could you share:
What cloud ecosystem (AWS, Azure, GCP) are you targeting?
What tech stack / language is your dedicated server currently running on?
Is your application a monolith or already containerized?
Yes. What you’re looking for is a cloud application modernization / serverless refactoring consultancy, rather than a company that only does “cloud migration.”
The specialists should be able to:
Assess the existing dedicated-server application and dependencies.
Refactor/re-architect the application rather than simply move the VM to the cloud.
Break monoliths into services where appropriate.
Replace server-managed components with managed/serverless services.
Handle databases, queues, APIs, authentication, observability, CI/CD, and infrastructure-as-code.
Plan an incremental migration so you don't have to rewrite everything at once.
For example, if you're moving to AWS, AWS specifically identifies partners with Migration & Modernization expertise and has a partner directory that can be filtered for Serverless, Application Modernization, Migration, and Modernization Services. Amazon Web Services, Inc.AWS Partner Solutions Finder AWS also identifies Lambda partners that specialize in migrating applications to serverless/microservice architectures.
Some firms worth investigating include:
SourceFuse — AWS partner with migration/modernization competencies and specific experience with serverless, Lambda, databases, and legacy application modernization.
DataArt — specializes in AWS migration and application refactoring, including decomposing monoliths and adopting serverless/managed services.
TSRI (The Software Revolution) — particularly interesting if you have a large or old codebase that needs substantial automated refactoring/re-architecting.
Claria — worth considering if your target is , with explicit serverless migration and refactoring capabilities using and related services.
If you tell me what your current stack is (e.g. .NET/Windows, Java/Linux, Node, Python), where you're moving it (AWS/Azure/GCP), and roughly how large the application is, I can narrow this to 5–10 specialists that are a good fit rather than generic cloud consultancies.
Moving from a dedicated server to a serverless architecture requires application refactoring , meaning your monolithic or containerized code must be broken down into event-driven components , adjusting for ephemeral compute, stateless design, and managed database/storage interactions.
Specialists in this kind of refactoring generally fall into three tiers depending on your target cloud ecosystem and organization size:
These are mid-sized engineering consultancies that focus deeply on modern serverless, event-driven architectures, and developer enablement rather than massive "lift-and-shift" data center moves.
N-iX: Holds specific AWS Lambda Service Delivery Designations and specializes in refactoring enterprise solutions into microservices running on serverless compute.
Techstack: Recognized for AWS Migration and Modernization competencies, specializing in serverless transformations (Lambda, API Gateway, DynamoDB) while transferring operational ownership and infrastructure-as-code (IaC) back to your internal team.
Mode2 / Coding Sans: Noted ecosystem partners focused specifically on transforming and prototyping workloads directly into serverless stacks.
Intellias: Global software engineering consultancy with deep competencies in serverless application migration and modern cloud data patterns.
2. Major Global Systems Integrators (GSIs)
If you are an enterprise moving thousands of legacy workloads, massive databases, and complex enterprise software, you may need a massive partner bench.
Accenture & Capgemini: Both have dedicated cloud modernization practices that routinely handle complex code refactoring, event-driven pipeline builds (like Step Functions and Lambda integration), and large-scale architectural redesigns.
Infosys & Wipro: Frequently execute refactoring and migration playbooks when transitioning legacy enterprise applications to cloud-native serverless functions across AWS, Azure, and GCP.
3. Cloud Provider Professional Services & Local Partners
Direct Cloud Support: If you are moving within a specific cloud, looking up designated partners via the AWS Partner Center, Google Cloud Partner Directory , or Microsoft Cloud Partner Program filtered by "Migration and Modernization" or "Serverless" yields verified local or regional boutiques.
To help narrow down which specialist fits best, could you share:
Which cloud provider you are targeting (AWS, Azure, Google Cloud)?
The tech stack and scale of your current dedicated server setup (e.g., PHP/MySQL monolith, Node.js microservices)?
