Which solution will meet these requirements?
Use a single stage in API Gateway. Create a Lambda function for each environment. Configure API clients to send a query parameter that indicates the environment and the specific Lambda function.
Use multiple stages in API Gateway. Create a single Lambda function for all environments. Add different code blocks for different environments in the Lambda function based on Lambda environment variables.
Use multiple stages in API Gateway. Create a Lambda function for each environment. Configure API Gateway stage variables to route traffic to the Lambda function in different environments.
Use a single stage in API Gateway. Configure API clients to send a query parameter that indicates the environment. Add different code blocks for different environments in the Lambda function to match the value of the query parameter.
Explanations:
This option suggests using a single stage in API Gateway with multiple Lambda functions for each environment. While it could technically work, it complicates management and configuration, as API clients would need to include a query parameter to specify the environment, leading to potential errors and making monitoring difficult.
This option proposes a single Lambda function handling all environments with conditional code blocks based on environment variables. This approach is not optimal for testing since it merges all environments into one function, making it hard to isolate issues and conduct proper testing for each environment before deployment.
This option correctly utilizes multiple stages in API Gateway, allowing for separate environments (e.g., test, production) to be managed and monitored independently. Each stage can point to different Lambda functions tailored for each environment, ensuring clear separation and better testing and deployment practices.
This option uses a single stage in API Gateway, which limits the ability to manage and monitor different environments effectively. While it suggests handling environment logic in the Lambda function based on a query parameter, it introduces unnecessary complexity and risks during the testing phase, as it lacks dedicated stages for testing and production.
I opine that the answer is:
Use multiple stages in API Gateway. Create a Lambda function for each environment. Configure API Gateway stage variables to route traffic to the Lambda function in different environments.