Exposes a public RESTful API, e.g., at https://api.retailys.com.
Validates request data types (based on the OpenAPI specification).
Proxies (redirects) each request to the appropriate application’s response method.
Logs all communication.
Combining OpenAPI Specs:
The Gateway merges the OpenAPI definitions exposed by all applications (via <gateway type="openapi" ...> in their manifests) into a single consolidated public API for Retailys.