You are a developer working on AWS Lambda functions that are triggered by Amazon API Gateway and
would like to perform testing for new API versions. Which of the following features will
accomplish this task?
Correct answer - "Canary Deployment" : In a canary release deployment, total API traffic is
separated at random into a production release and a canary release with a pre-configured ratio.
Typically, the canary release receives a small percentage of API traffic and the production
release takes up the rest. The updated API features are only visible to API traffic through the
canary. You can adjust the canary traffic percentage to optimize test coverage or performance.
Incorrect:
"Stage Variables" - They act like environment variables and can be used in your API setup
"Mapping Templates" - Its a script to map the payload from a method request to the corresponding
integration request and from an integration response to the corresponding method response
"Custom Authorizers" - Used for authentication purposes and must return AWS Identity and Access
Management (IAM) policies