AWS Certified Developer Associate DVA-C02 Practice Question

AWS provides the ability to simulate application endpoints using Amazon API Gateway. By setting up a mock integration, the developer can return a predefined response without actually sending the request to the backend service like Amazon S3. This allows testing the Lambda function's handling of calls and responses without touching any live resources. Using Lambda or S3 directly for mock testing is incorrect as it would imply either invoking the actual Lambda function or interacting with the real S3 service, thus incurring costs or affecting production data. While Amazon DynamoDB is part of the AWS ecosystem, it is not a tool for creating mock endpoints.