SAP-C02 Design for New Solutions Practice Question
A company is designing a new microservices architecture using Amazon ECS with Fargate. The services need to communicate with each other using REST APIs. The company wants to implement a service mesh to handle traffic routing, observability, and security. Which AWS service should the company use?
⚠ Common exam trap
Candidates often confuse service discovery (Cloud Map) with a full service mesh, or assume that a load balancer (ELB) or API gateway can provide the same level of traffic routing, observability, and security for internal microservices 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
✓
AWS App Mesh.
AWS App Mesh is a service mesh that provides application-level networking, enabling traffic routing, observability (metrics, logs, traces), and security (mTLS, authorization policies) for microservices. It integrates natively with Amazon ECS on Fargate, allowing sidecar Envoy proxies to handle inter-service communication without modifying application code.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Elastic Load Balancing for internal network load balancers.
Why it's wrong here
ELB is a load balancer, not a service mesh.
- ✓
AWS App Mesh.
Why this is correct
App Mesh provides service mesh capabilities for ECS.
- ✗
AWS Cloud Map for service discovery.
Why it's wrong here
Cloud Map provides service discovery, not traffic routing or observability.
- ✗
Amazon API Gateway with VPC linking.
Why it's wrong here
API Gateway is for external-facing APIs, not inter-service communication.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.