A company is developing a social media application that must scale to meet demand spikes and handle ordered processes. Which AWS services meet these requirements?

The correct answer is A. ECS with Fargate, RDS, and SQS for decoupling. Option A combines ECS with Fargate for scalability, RDS for relational data, and SQS for decoupling with message ordering (FIFO queues). Option B uses SNS, which does not maintain message order. Option C is suitable for serverless workflows but not relational data. Option D…

Submitted by klara.se· Mar 4, 2026Design Resilient Architectures

Question

Options

AECS with Fargate, RDS, and SQS for decoupling.
BECS with Fargate, RDS, and SNS for decoupling.
CDynamoDB, Lambda, DynamoDB Streams, and Step Functions.
DElastic Beanstalk, RDS, and SNS for decoupling.

How the community answered

(56 responses)

A
73% (41)
B
14% (8)
C
5% (3)
D
7% (4)

Explanation

Option A combines ECS with Fargate for scalability, RDS for relational data, and SQS for decoupling with message ordering (FIFO queues). Option B uses SNS, which does not maintain message order. Option C is suitable for serverless workflows but not relational data. Option D relies on Elastic Beanstalk, which offers less flexibility for scaling.

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