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CLF-C02 Practice Question 11: Migration Strategies

AWS Certified Cloud Practitioner (CLF-C02) · Test 2 · question 1 of 10

Cloud Conceptsmedium

During its move to AWS, a retailer runs its application servers on Amazon EC2 essentially as they were on premises, but moves its self-managed MySQL database to Amazon RDS for MySQL so that AWS handles backups and patching. The application's core architecture is not redesigned. Which migration strategy best describes this approach?

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Answer:

  • B. Replatform

Replatform (sometimes called "lift, tinker, and shift") moves an application to the cloud while introducing some optimization to take advantage of cloud capabilities, without changing its core architecture. Moving a self-managed database onto a managed service such as Amazon RDS is AWS's own example of replatforming.

Option A, rehost ("lift and shift"), moves the application without making any changes; swapping the self-managed database for a managed service is a change, so this goes beyond rehosting. Option C, refactor or re-architect, modifies the application's architecture to take full advantage of cloud-native features, the most complex and costly strategy, and the stem says the architecture is not redesigned. Option D, repurchase ("drop and shop"), replaces the application with a different product, typically a SaaS offering, rather than migrating the existing one.

Reference: About the migration strategies

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