Cloud migration remains one of the most impactful decisions a business can make — but it's also one of the most complex. After guiding dozens of organizations through this process, we've distilled our approach into a comprehensive checklist.
Phase 1: Assessment & Planning
Before touching any infrastructure, you need a clear picture of what you're working with and where you're going.
- Application inventory: Document every application, its dependencies, and its current resource usage.
- Data classification: Identify sensitive data and compliance requirements (HIPAA, SOC 2, GDPR).
- Cost modeling: Build a realistic TCO comparison between current infrastructure and target cloud environment.
- Migration strategy per workload: Decide for each app — rehost, replatform, refactor, or retire.
Phase 2: Foundation & Security
Your cloud foundation determines everything that follows. Get this right.
- Landing zone setup: Configure accounts, VPCs, IAM policies, and networking before any workloads move.
- Security baseline: Implement encryption at rest and in transit, set up security monitoring, and define incident response procedures.
- Networking: Establish connectivity between cloud and on-premises (VPN or Direct Connect/ExpressRoute).
Phase 3: Migration Execution
Start with low-risk workloads to build confidence and refine your process.
- Pilot migration: Move a non-critical application first. Document every issue and lesson learned.
- Data migration: Use appropriate tools (AWS DMS, Azure Migrate) and validate data integrity at every step.
- Cutover planning: Define rollback procedures before every cutover. Test them.
Phase 4: Optimization
Migration is not the finish line — it's the starting line for cloud-native benefits.
- Right-sizing: Review instance sizes after 2-4 weeks of production data.
- Reserved capacity: Purchase reserved instances or savings plans for stable workloads.
- Monitoring: Implement comprehensive monitoring and alerting with CloudWatch, Azure Monitor, or third-party tools.
Every migration is unique, but having a structured approach dramatically reduces risk and ensures nothing falls through the cracks. If you're planning a migration, reach out — we'd love to help.