To prevent invalid requests being sent to back-end services unnecessarily, you can now use an API gateway to validate incoming requests.

Using an API gateway, you can set up validation request policies to check that:

• the request includes specific headers
• the request includes specific query parameters
• the request body is of a specific content type

You can control how an API gateway applies a validation request policy by specifying a validation mode for the policy.

For more information see, Adding Request Validation to API deployments.