SAA-C03 Q518 · Compute

Question

A company is developing a social media application that must scale rapidly and handle long running, ordered processes that store large amounts of relational data. Components must scale independently and evolve without downtime. Which combination of AWS services will meet these requirements?

Accepted Answer

Let's map each requirement to the solution:

1. **Scale rapidly** → Amazon ECS with Fargate provides serverless container orchestration. Fargate removes the need to manage EC2 instances and can scale containers independently and quickly based on demand.

2. **Independent scaling & evolve without downtime** → ECS with Fargate is ideal for **microservices architecture**. Each service runs as a separate task definition/service, so components can scale independently, be updated independently (rolling deployments), and evolve without downtime.

3. **Long-running, ordered processes** → **Amazon SQS** (specifically FIFO queues) supports ordered message processing. SQS decouples producers from consumers, enabling long-running background processes. Standard SQS provides best-effort ordering; FIFO S

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