AWS Certified Cloud Practitioner (CLF-C02)Cloud ConceptsMedium
A small startup is considering migrating its entire IT infrastructure to AWS. They are particularly interested in a strategy that involves moving applications and databases without making significant changes to the code or architecture. Which AWS migration strategy (one of the 7 Rs) best fits this requirement?
- ARefactor
- BReplatform
- CRehost
- DRepurchase
Show answer & explanationAnswer & explanation
Correct answer: C. Rehost
Rehost (Lift and Shift) involves moving applications to AWS without significant changes to their architecture or code, directly matching the startup's requirement for minimal modifications. This is often the quickest migration strategy.
Why the other options are wrong
- A. Refactor involves significant re-architecting of an application to take full advantage of cloud-native features.
- B. Replatform involves making some cloud-native optimizations but avoids significant architectural changes.
- D. Repurchase involves moving to a different, often SaaS-based, product.
Rehost (Lift and Shift)
A migration strategy where applications are moved to the cloud with minimal or no changes to their architecture or code.
- Often the fastest migration approach.
- Involves migrating existing servers (e.g., VMs) as-is to EC2.
- Good for gaining initial cloud experience quickly.
Memory trick: Seven paths to the cloud, each with unique turns.