SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating a web application to AWS and wants to use a microservices architecture. The application needs to communicate synchronously via REST APIs. Which TWO AWS services should the architect consider for implementing API 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
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Application Load Balancer
Amazon API Gateway is a fully managed service for creating RESTful APIs. AWS AppSync is for GraphQL. For internal microservice communication, API Gateway is suitable. Application Load Balancer can also route HTTP traffic to multiple services. NLB is for TCP/UDP. SQS is asynchronous. Step Functions orchestrate workflows.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Application Load Balancer
Why this is correct
ALB can route HTTP requests to different microservices based on paths.
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AWS Step Functions
Why it's wrong here
Step Functions is for workflow orchestration, not direct API communication.
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Amazon API Gateway
Why this is correct
API Gateway is ideal for creating REST APIs.
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AWS AppSync
Why it's wrong here
AppSync is for GraphQL, not REST.
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Amazon Simple Queue Service (Amazon SQS)
Why it's wrong here
SQS is for asynchronous messaging.
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