API composition
API composition refers to the ability of an API exposure block to perform split joins against one or many downstream service endpoints. The idea is that instead of an API consumer having to make multiple API requests, for example, to perform multiple queries, a single request payload can be split into multiple downstream calls. The responses can then be joined into a single payload before the response is sent back to the consumer.
This capability can be very useful, for example, when it is required to optimize the number of API calls made by a mobile device, as network bandwidth is often a premium resource, or when the number of API calls required would end in too much chattiness between the API consumer and API exposure, ...
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