The Cloud Migration Imperative
Cloud migration is no longer optional for enterprises that want to remain competitive. But choosing the right migration strategy for each workload is critical to success. A one-size-fits-all approach inevitably leads to cost overruns, performance issues, or both.
The 7Rs of Cloud Migration
1. Rehost (Lift and Shift)
Move applications to the cloud with minimal changes. This is the fastest path to cloud but doesn't leverage cloud-native benefits. Best for applications with an imminent data center exit deadline.
2. Replatform (Lift, Tinker, and Shift)
Make targeted optimizations during migration — like moving to managed databases or containerizing applications — without changing core architecture. Offers a good balance of speed and optimization.
3. Refactor / Re-architect
Redesign applications to be cloud-native, leveraging microservices, serverless, and managed services. The highest effort but delivers the greatest long-term benefits.
4. Repurchase
Replace existing applications with SaaS alternatives. Often the right choice for commodity capabilities like CRM, HR, and email.
5. Retain
Keep some applications on-premises, at least for now. Not every workload benefits from cloud migration — some may have compliance, latency, or cost considerations that favor on-premises hosting.
Application Rationalization
Before migrating, organizations should conduct a thorough application rationalization exercise. This involves cataloging all applications, assessing their business value, technical complexity, and cloud readiness, and then mapping each to the optimal migration strategy.
Key Success Factors
Conclusion
Successful cloud migration requires a strategic, workload-by-workload approach. By understanding the full spectrum of migration strategies and conducting proper application rationalization, organizations can maximize their cloud investment while minimizing risk and disruption.