Question 1

A company has a serverless application using Amazon API Gateway and AWS Lambda. The application is invoked millions of times per day, and the AWS bill is higher than expected. The solutions architect notices that the Lambda function execution time is very fast, but the API Gateway costs are dominating the bill. Which TWO strategies can reduce the overall cost of this architecture? (Select TWO.)

Accepted Answer

Identify ways to reduce API Gateway costs: HTTP APIs are cheaper than REST APIs, and caching reduces backend calls.

Question 2

What mistakes do candidates make on this AWS SAA-C03 question?

Accepted Answer

Thinking increasing Lambda memory saves money. It only saves money if the execution time drops significantly enough to offset the higher per-ms cost, but the prompt says execution is already very fast.

How to approach this question

Full Answer

Common mistakes

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