SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is modernizing its monolithic Java application to a microservices architecture on AWS. The application uses a shared Oracle database. The team wants to implement an event-driven architecture. Which TWO AWS services should be used to decouple microservices and handle asynchronous communication?
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
✓
Amazon EventBridge
Correct answers are D (Amazon EventBridge) and E (Amazon Simple Queue Service - SQS). SQS provides a reliable message queue for decoupling microservices and enabling asynchronous communication. EventBridge allows building event-driven architectures by routing events from various sources to targets. Option A (AWS AppSync) is for building GraphQL APIs; it does not handle decoupling in an event-driven pattern. Option B (Amazon SNS) is a pub/sub notification service but not primarily for decoupling queues; it can be used for fan-out but not as a queue. Option C (Amazon Kinesis Data Streams) is for real-time streaming data; it is not typically used for simple decoupling of microservices.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS AppSync
Why it's wrong here
AWS AppSync is a service for building GraphQL APIs; it does not handle decoupling of microservices or asynchronous communication in an event-driven architecture.
- ✗
Amazon Simple Notification Service (SNS)
Why it's wrong here
Amazon SNS is a pub/sub notification service used for fan-out messaging; it does not provide a message queue for decoupling microservices.
- ✗
Amazon Kinesis Data Streams
Why it's wrong here
Amazon Kinesis Data Streams is designed for real-time streaming of large data; it is not the best fit for simple decoupling of microservices.
- ✓
Amazon EventBridge
Why this is correct
Amazon EventBridge enables event-driven architectures by routing events between sources and targets; it is a correct choice for decoupling and asynchronous communication.
- ✓
Amazon Simple Queue Service (SQS)
Why this is correct
Amazon SQS provides a fully managed message queue for decoupling microservices and handling asynchronous communication; it is a correct choice.
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