SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating a web application to AWS and wants to use Amazon ECS with Fargate. The application needs to store session state. Which AWS service should the company use for session state management?
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 ElastiCache for Redis
Amazon ElastiCache for Redis is a fully managed, in-memory caching service that provides low-latency access to session data, making it ideal for session state management in containerized applications on ECS Fargate. Option B (Amazon S3) is wrong because S3 is object storage with higher latency and is not designed for frequent, low-latency read/write operations required for session state. Option C (Amazon DynamoDB) is wrong because while it can be used, it is not the most common or recommended choice for session state due to higher latency compared to in-memory caching; ElastiCache is typically preferred. Option D (Amazon RDS) is wrong because RDS is a relational database service for persistent storage, not for transient session state with low-latency requirements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Amazon ElastiCache for Redis
Why this is correct
ElastiCache for Redis is ideal for session state management.
- ✗
Amazon S3
Why it's wrong here
S3 is not designed for low-latency session state.
- ✗
Amazon DynamoDB
Why it's wrong here
DynamoDB can be used but ElastiCache is more typical for session state.
- ✗
Amazon RDS
Why it's wrong here
RDS is for relational databases, not session caching.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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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.