SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is modernizing a monolithic application by decomposing it into microservices. The application currently uses a single MySQL database. The company wants to use a polyglot persistence approach, with different microservices using the most appropriate database type. The team has limited experience with NoSQL databases. Which strategy should the team use to minimize risk during the migration?
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
✓
Use the strangler fig pattern to incrementally replace parts of the monolith with microservices, starting with a non-critical function
Using the strangler fig pattern allows incremental migration, replacing parts of the monolith with microservices one at a time. This reduces risk because each microservice can be tested independently. Starting with a non-critical service provides learning opportunity without high impact.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Rewrite the entire application as microservices using a new database for each service from the start
Why it's wrong here
Rewriting everything at once is high risk and requires deep NoSQL expertise.
- ✓
Use the strangler fig pattern to incrementally replace parts of the monolith with microservices, starting with a non-critical function
Why this is correct
Correct. The strangler fig pattern allows gradual migration with minimal risk.
- ✗
Migrate the entire monolith to a containerized application on Amazon ECS in one go
Why it's wrong here
Big-bang migration of a monolith is risky and does not address database decomposition.
- ✗
Use AWS DMS to replicate the monolith's database to multiple target databases simultaneously
Why it's wrong here
DMS is not designed to decompose a single database into multiple databases for microservices.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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