AWS DevOps Engineer Professional Practice Test

What action must be taken to make changes to an API in API Gateway visible externally?

1. Run a script to update the API configuration

2. Deploy the API to a specific stage

3. Notify users about the changes

4. Automatically publish every update made

The correct answer is: Deploy the API to a specific stage

To make changes to an API in API Gateway visible externally, deploying the API to a specific stage is essential. This deployment process takes the changes made in the API configuration and publishes them to a pre-defined stage, which users or applications connect to when making API calls. Each stage can represent different versions or environments (like development, testing, or production) of the API, and deployment ensures that the correct version of the API is actually accessible and functional for users. Simply updating the configuration or notifying users does not make the changes visible; instead, those steps are supplementary actions that can accompany the deployment process. Automatically publishing every update is not a standard feature in API Gateway, as it allows for controlled deployments to avoid issues that could arise from untested changes being immediately available in a production environment. Hence, the requirement to deploy to a specific stage effectively makes the API changes accessible for use.