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 Cloud migration strategies explained in 7 simple points!

(common scenario-based question for interviews) 


Don't skip these if you're gearing up for a cloud interview


1. Rehost (lift and shift) : Simply move applications to the cloud as they are.

↳ Quick wins with minimal changes

↳ Good for tight deadlines (if compatible)

↳ Lower initial cloud costs


2. Replatform : Adapt applications slightly to leverage cloud benefits

↳ Optimize without full rewrites

↳ Cloud-native service adoption

↳ Balance speed with optimization


3. Repurchase : Replace existing systems with cloud-based alternatives.

↳ Replace with SaaS solutions

↳ Reduce maintenance overhead

↳ Focus on core business needs


4. Refactor (re-architect) : Redesign applications for optimal cloud performance.

↳ Full cloud-native transformation

↳ Maximum cloud benefits

↳ Higher initial investment


5. Relocate: Move workloads between cloud locations or providers.

↳ Strategic region/provider moves

↳ Compliance & performance focus

↳ Multi-cloud flexibility


6. Retire (decommission): Eliminate unnecessary systems.

↳ Remove technical debt

↳ Cost optimization

↳ Simplify landscape


7. Retain : Keep systems on-premises for now.

↳ Strategic postponement

↳ Risk management


For Interview Takers:

→ Most migrations use a mix of these strategies.

→ Know when to pitch each one

→ Be ready to explain the trade-offs of each strategy (cost, time, risk, long-term benefits).

→ Discuss real-world scenarios.

→ Show cloud-native awareness.

→ Emphasize assessment and planning.

→ Address security considerations.


This is not an exhaustive set of considerations


Migration questions can delve into strategy and business impact, especially for higher-level roles.


Having key points readily available is essential!!


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