Exam AWS Certified Data Engineer - Associate DEA-C01 topic 1 question 33 discussion

The solution with the least operational overhead is D. Create an AWS Lambda function with an EventBridge rule to keep it warm. Lambda handles the infrastructure management automatically, and the warm-up strategy addresses potential cold start issues while maintaining minimal operational requirements compared to container-based solutions.

D. Create an AWS Lambda function. Ensure that the function is warm by scheduling an Amazon EventBridge rule to invoke the Lambda function every 5 minutes by using mock events.

I AM THINKING B. Dont u think provisionning concurrency add additional cost even when the function is not in active use, which is unnecessary for an occasionally invoked function.

B and D are both ok. Still, since it says LEAST operational overhead, then keep it simple. B then.

B - simple and clear

I would go in B

Although D seems a good choice but the questions asks for "LEAST operational overhead" will result in B

Answ. B You can create a web API with an HTTP endpoint for your Lambda function by using Amazon API Gateway. API Gateway provides tools for creating and documenting web APIs that route HTTP requests to Lambda functions. You can secure access to your API with authentication and authorization controls. Your APIs can serve traffic over the internet or can be accessible only within your VPC. https://docs.aws.amazon.com/lambda/latest/dg/services-apigateway.html

B. AWS Lambda functions can be easily integrated with Amazon API Gateway to create RESTful APIs. This integration allows API Gateway to directly invoke the Lambda function when the API endpoint is hit.