API translation between different solution components is always required for an application to run. Integrating many different software components or products can be relatively easy if they can communicate with each other through a single communication channel. Thus, having a single API gateway which can be used by all other components for seamless communication among them is always a win-win situation.
One of our customers wanted to expose services as set of HTTP endpoints. This was required so that client application developers can make HTTP requests to these endpoints. Depending on the endpoint, the service might then return data, formatted as XML or JSON, back to the client app. Also, content mapping was one of their major requirements i.e. Modifying the Input data to a Rest API on the fly and then extracting the desired values from the response as per the requirement.
Because the customer wanted to make their service available to the web, they wanted to make sure that all necessary steps have been taken in order to secure and protect their services from unauthorized access. Also, it can be easily consumed by other apps/components, enabling them to change the backend service implementation without affecting the public API.