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Attreides
·9 min read

Cloud Migration Strategy: A CTO's Playbook for 2025

Plan and execute a successful cloud migration. This CTO-level guide covers assessment, architecture planning, migration patterns, and post-migration optimization.

Cloud MigrationAWSDigital Transformation

Cloud migration is the #1 priority for enterprise CTOs in 2025. Here's the strategic playbook we use with our clients.

Phase 1: Assessment & Discovery

Inventory all applications, databases, and infrastructure. Classify each workload using the 6 Rs: Rehost, Replatform, Refactor, Repurchase, Retire, Retain.

Phase 2: Architecture Planning

Design your target cloud architecture. Key decisions include: single vs. multi-cloud, containerization strategy (ECS vs. EKS), database selection (RDS vs. Aurora vs. DynamoDB), and networking (VPC design, CDN).

Phase 3: Migration Execution

Migrate in waves, starting with low-risk workloads. Use AWS Migration Hub or Azure Migrate for tracking. Run parallel environments during transition.

Phase 4: Optimization

Post-migration, focus on cost optimization (right-sizing, reserved instances, spot instances), performance tuning, and security hardening.

Common Pitfalls

- Lifting and shifting without modernizing (you'll pay cloud prices for on-prem architecture) - Underestimating data transfer costs and times - Not training the team on cloud-native operations - Skipping the security review