SAP-C02 Strangler Fig Pattern Practice Question
A company is migrating a monolithic e-commerce application to a microservices architecture on AWS. The migration must minimize downtime and allow rollback. Which migration strategy should the company use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Strangler fig pattern
The strangler fig pattern allows gradual replacement of monolithic components with microservices, minimizing downtime and enabling easy rollback. Option A (refactor) typically involves rewriting the entire application, which often requires significant downtime and increases risk. Option B (big bang migration) migrates all components at once, leading to extended downtime and high risk. Option D (rehost) moves the monolith as-is without modernization, which does not achieve the goal of migrating to a microservices architecture.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Refactor
Why it's wrong here
General term; not specific to incremental migration.
- ✗
Big bang migration
Why it's wrong here
High risk of downtime and rollback complexity.
- ✓
Strangler fig pattern
Why this is correct
Gradually replaces monolith with microservices, allowing rollback.
- ✗
Rehost (lift and shift)
Why it's wrong here
Moves the monolith as-is, no modernization.
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