Cloud Migration Strategy: Controlled Infrastructure Modernization

Cloud migration should not start with “how many systems can we move,” but with “which business outcomes must we achieve first.” A clear strategy helps avoid cost overruns and architectural risk.

6R decision framework (condensed)

• Rehost: fast migration with minimal changes.
• Replatform: partial optimization of platform services.
• Refactor: redesign to fully leverage cloud-native capabilities.

Practical execution steps

1. Group applications by business criticality and dependency.
2. Plan migration waves by complexity.
3. Standardize observability and backup before cutover.
4. Optimize post-migration costs through rightsizing.

The end goal is not simply “moving to cloud,” but improving scalability and reducing time-to-market.