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Cloud Migration Services in the USA

That Move Your Business to the Cloud Without Bringing Old Problems Along

A cloud migration that simply relocates your existing architecture to a different environment inherits all the same limitations, just with a different bill. We migrate businesses to AWS, Azure, and Google Cloud with architectural improvements that make the move actually worth it.

Trusted by Teams Across Industries

A Cloud Migration Company in the USA That Treats the Move as an Opportunity, Not Just a Relocation

The easiest way to migrate to the cloud is to lift the existing application, drop it onto cloud infrastructure, and call it a migration. It works, in the narrow sense that the application runs. What it doesn’t do is address any of the architectural limitations that existed before the migration, inefficient resource usage, tightly coupled components that can’t scale independently, or data structures that weren’t designed for cloud-native performance. Those problems move with you, and now they cost more because cloud infrastructure bills for what you provision, not just what you use efficiently. 

A properly executed migration is an opportunity to fix what wasn’t working, not just relocate it. As a cloud migration company in the USA, we assess every application against the question of what should change during the move, which components benefit from re-architecture, which can be migrated as-is, and which require an intermediate step before they’re ready for cloud-native infrastructure. The resulting migration strategy is more thoughtful than a straight lift-and-shift, and the infrastructure you end up with actually delivers the cost efficiency, scalability, and reliability that cloud migration is supposed to provide. 

years delivering and supporting enterprise software
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products built across enterprise and digital platforms
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clients working with us as long-term partners
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industries, including fintech, healthcare, and enterprise SaaS
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The Full Scope of What We Handle

Cloud migration spans assessment, planning, execution, and the optimisation work that continues after the move is technically complete. We cover the entire process, not just the cutover event.

Migration Assessment & Strategy

Before any infrastructure moves, we assess your current application portfolio against migration suitability, identifying which workloads can move as-is, which need re-architecture, and which are better candidates for replacement than migration. The strategy that emerges from this assessment determines the entire approach.

Application Re-Architecture for Cloud

Applications built for on-premises infrastructure often don't take advantage of what cloud environments offer: elastic scaling, managed services, distributed architecture. We re-architect applications where the business case justifies it, so the infrastructure you migrate to is actually cloud-native, not just cloud-hosted.

Database Migration

Moving databases requires careful handling of data integrity, downtime minimisation, and the schema or platform changes that often accompany a move to managed cloud database services. We plan and execute database migrations with validation at every stage, so the data on the other side is complete and accurate.

Cross-Platform App Development

Using Flutter and React Native, we deliver cross-platform applications that maintain native-quality experiences on both iOS and Android from a single codebase. This approach reduces development overhead without compromising what users actually feel when they use your product.

Hybrid Cloud Integration

Not every workload needs to move to the cloud, and not every organisation is ready for a full migration. We design hybrid architectures that cleanly integrate on-premises systems with cloud infrastructure, giving you the benefits of the cloud where it matters most while maintaining systems that aren't ready or required to move.

Cost Optimisation & Right-Sizing

Cloud infrastructure that isn't actively managed tends toward over-provisioning and unnecessary spend. We design migrations with cost efficiency built in from the start, right-sizing resources to actual workload demands, and implementing tagging and monitoring that maintain cost visibility after the migration is complete.

Security & Compliance During Migration

Moving sensitive data and regulated workloads to the cloud requires security and compliance controls that are validated throughout the process, not just at the end. We design migrations that maintain compliance with HIPAA, GDPR, PCI DSS, and SOC 2 throughout the transition, with encryption, access controls, and audit logging in place at every stage.

Post-Migration Optimisation & Support

A migration that's technically complete isn't necessarily optimised. We provide post-migration support that monitors performance, identifies cost and architectural improvements based on real usage data, and continues to refine the environment as you settle into cloud-native operations.

AWS Migration

Amazon Web Services offers the broadest and most mature set of cloud services, making it a strong default choice for many organisations. Still, itt it also means that getting the most value from an AWS migration depends on selecting the right services for your specific workloads rather than defaulting to the most familiar ones. As a certified AWS partner, we bring deep technical familiarity with the platform to every migration we deliver. 

We plan AWS migrations around the specific characteristics of your workloads, compute-intensive applications mapped to the right EC2 instance types or moved to serverless architecture where that fits better, data workloads migrated to RDS, DynamoDB, or Redshift based on access patterns and scale requirements, and storage architecture designed around S3 and the access tiers that match your actual data lifecycle. Networking, security groups, and identity and access management are architected for the principle of least privilege from the start. Infrastructure is provisioned via Terraform, making the AWS environment reproducible, auditable, and independent of manual console configuration, which is difficult to track or replicate. We manage the full migration lifecycle, from initial assessment through cutover to post-migration cost optimisation, so the AWS environment you end up with is genuinely built for your workloads, not a default configuration applied without that context. 

Azure Migration

Microsoft Azure is frequently the right choice for organisations already invested in the Microsoft ecosystem, Active Directory, Office 365, .NET applications, and enterprise tools that integrate naturally with Azure’s identity and management infrastructure. For these organisations, an Azure migration often reduces friction in ways that a different provider wouldn’t, because the integration work has already been done at the platform level. 

We plan Azure migrations with this integration advantage in mind, alongside the platform’s own strengths in compute, data services, and hybrid cloud capability. Application workloads are mapped to Azure App Service, Azure Kubernetes Service, or Azure Functions based on architecture fit. Data migration leverages Azure SQL Database, Cosmos DB, or Synapse Analytics depending on workload characteristics. For organisations maintaining hybrid environments, Azure’s hybrid cloud capabilities, Azure Arc, ExpressRoute, and consistent identity management through Azure AD across on-premises and cloud resources are architected deliberately rather than treated as a temporary state on the way to full migration. Infrastructure provisioning through Terraform and Azure DevOps pipelines keeps the environment consistent and auditable, with deployment automation built in from the start of the migration rather than added afterwards. 

Google Cloud Migration

Google Cloud Platform’s particular strengths, data analytics, machine learning infrastructure, and Kubernetes-native architecture, make it a strong fit for organisations whose workloads lean heavily on data processing, AI capability, or container-based application architecture. As a certified Google Cloud partner, we bring direct platform expertise to migrations where this expertise is the deciding factor. 

We plan Google Cloud migrations around these capabilities specifically: application workloads containerised and deployed through Google Kubernetes Engine where that architecture fits, data pipelines built on BigQuery and Dataflow for organisations with significant analytics requirements, and AI and machine learning workloads architected around Vertex AI for businesses where that integration creates genuine advantage. Cloud Storage and Cloud SQL handle the storage and relational data layers, sized and configured based on actual access patterns rather than default settings. Identity and access management is structured around Google Cloud IAM, with the same least-privilege principles applied across all providers we work with.

How a Migration Engagement Actually Runs

Cloud migrations that go wrong usually go wrong because the assessment phase was rushed or skipped entirely. Our process is built around getting that phase right.

Application & Infrastructure Assessment
We catalogue your existing applications, dependencies, data flows, and infrastructure in detail, identifying what needs to move, what needs to change before it moves, and what the migration sequence should look like to minimise risk and disruption.
Cloud Strategy & Platform Selection
Based on the assessment, we recommend the cloud platform or multi-cloud approach that best fits your workloads, compliance requirements, existing technical ecosystem, and cost objectives, making the reasoning explicit rather than assumed.
Migration Planning & Architecture Design
We design the target architecture and the migration path to get there, including the database migration strategy, the application re-architecture scope, the networking and security design, and the cutover approach that minimises downtime for the systems your business depends on.
Phased Migration Execution
Migration is executed in phases, with validation at each stage before moving to the next. Lower-risk workloads typically migrate first, building confidence and surfacing any unexpected issues before the migration reaches systems with higher operational stakes.
Validation & Cutover
Before final cutover, migrated systems are validated against performance, security, and functional criteria established during planning. Rollback procedures are in place for any cutover that affects production systems your business depends on.
Post-Migration Optimisation
After migration, we monitor real usage patterns and optimise the environment based on actual data, right-sizing resources, refining cost allocation, and addressing any performance gaps that weren't visible until the system was running under genuine production load.

Software that is aligned with Global Standards and Compliance

We build enterprise software with security, privacy, and governance built into the foundation, not added later.

GDPR

Data privacy and protection

HIPAA

Secure healthcare data handling

PCI DSS

Payment and financial data security

ISO 27001

Information security management and risk controls

SOC 2

Operational controls for security, availability, and confidentiality

OWASP

Secure application design to mitigate common vulnerabilities

Migrations and Cloud Infrastructure We've Delivered

The most useful thing we can show you is work that was actually hard. These are a few of the products we’ve built across fintech, healthcare, and consumer platforms, each one with its own set of technical constraints, timeline pressures, and performance requirements. 

Frequently Asked Questions

The right choice depends on your existing technical ecosystem, workload characteristics, and business priorities. Organisations already invested in Microsoft tools often find Azure reduces integration friction. Organisations with data-intensive or AI-forward workloads often find Google Cloud’s strengths align well. AWS offers the broadest service catalogue, which suits organisations with varied or evolving infrastructure needs. We assess your specific situation and recommend the platform that fits best, including multi-cloud approaches when that’s the better answer.
It depends on the size and complexity of your application portfolio. A focused migration of a single application with moderate complexity can take 6 to 10 weeks. A full enterprise migration involving multiple interconnected systems, significant data volumes, and compliance requirements is a longer engagement, often planned in phases over several months. We provide a realistic timeline after the assessment phase, based on our findings, rather than a generic estimate.

It can, but only if the migration includes the right-sizing and architecture decisions that make cloud infrastructure cost-efficient. A straight lift-and-shift of an inefficiently architected application onto cloud infrastructure frequently costs more than the original on-premises setup, because cloud billing reflects exactly what you provision. We design migrations with cost efficiency as an explicit goal, right-sizing resources, leveraging managed services where they reduce operational overhead, and building cost visibility that keeps spend aligned with actual usage post-migration.

Through phased migration planning, parallel running where the risk profile justifies it, and validated rollback procedures for any cutover affecting production systems. The specific approach depends on the application; some systems can migrate with near-zero downtime using techniques like blue-green deployment, while others require a defined maintenance window. We plan the approach during the migration design phase, with your operational constraints as a primary input.

Yes. Database migration is one of the highest-risk components of any cloud migration, and we treat it accordingly, with data validation at every stage, checksums and reconciliation processes that confirm completeness and accuracy, and a migration approach that maintains data integrity throughout. For mission-critical databases, we typically run validation processes that compare source and destination data before any cutover is finalised.

Yes. For organisations migrating workloads subject to HIPAA, GDPR, PCI DSS, or SOC 2 requirements, the compliance posture is maintained throughout the migration, not just validated at the end. Encryption, access controls, audit logging, and data residency requirements are addressed in the target architecture design and verified throughout execution, so the migrated environment meets the same compliance standards as the system it replaced or improves on them. 

A Cloud Migration Worth Doing Properly, Not Just Quickly

If you’re planning a cloud migration and want it approached with the technical rigour that actually delivers on the promise of moving to the cloud, we’d like to understand what you’re working with. 

Trusted across 500+ projects to deliver scalable, enterprise-grade solutions.

Julian Voss
Julian VossCEO of Creative Pulse
We’ve worked with several agencies, but GreyScript is the first that actually treats UX as a business driver rather than just an aesthetic choice. They didn't just hand over a 'clean' interface; they built a user journey rooted in how our customers actually behave. Seeing a jump in engagement within a month of the rollout proved that their design strategy is as functional as it is polished.
Anita Desai
Anita DesaiOperations Director at Veridian Tech
In enterprise software, a missed deadline is a massive financial liability. What stood out about GreyScript was their transparency throughout the build. They managed the sprints with total predictability, delivering a complex, multi-platform solution exactly when they said they would. It’s rare to find a team that hits a launch date without compromising the code quality in the final week.
Jordan Hayes
Jordan HayesVP of Product at Synapse Labs
GreyScript has a way of making high-stakes development feel incredibly manageable. We brought them a set of complex integration challenges that had stalled our progress for months, and they dismantled those roadblocks within weeks. They have a rare ability to take a messy, complicated problem and return a clean, elegant solution without any hand-holding from our side. It is the most frictionless experience I’ve had with an external team
Marcus Thorne
Marcus ThorneCEO of Thorne & Co. Global
Working with GreyScript feels like having an elite in-house team. Their communication is effortless, they bridge the gap between technical complexity and executive-level strategy without any gaps in information. We always knew exactly where the project stood, which made the entire process remarkably stress-free

Share your vision. We’ll architect the solution.

Julian Voss
Julian VossCEO of Creative Pulse
We’ve worked with several agencies, but GreyScript is the first that actually treats UX as a business driver rather than just an aesthetic choice. They didn't just hand over a 'clean' interface; they built a user journey rooted in how our customers actually behave. Seeing a jump in engagement within a month of the rollout proved that their design strategy is as functional as it is polished.
Anita Desai
Anita DesaiOperations Director at Veridian Tech
In enterprise software, a missed deadline is a massive financial liability. What stood out about GreyScript was their transparency throughout the build. They managed the sprints with total predictability, delivering a complex, multi-platform solution exactly when they said they would. It’s rare to find a team that hits a launch date without compromising the code quality in the final week.
Jordan Hayes
Jordan HayesVP of Product at Synapse Labs
GreyScript has a way of making high-stakes development feel incredibly manageable. We brought them a set of complex integration challenges that had stalled our progress for months, and they dismantled those roadblocks within weeks. They have a rare ability to take a messy, complicated problem and return a clean, elegant solution without any hand-holding from our side. It is the most frictionless experience I’ve had with an external team
Marcus Thorne
Marcus ThorneCEO of Thorne & Co. Global
Working with GreyScript feels like having an elite in-house team. Their communication is effortless, they bridge the gap between technical complexity and executive-level strategy without any gaps in information. We always knew exactly where the project stood, which made the entire process remarkably stress-free