We need an API platform that will be used both for our internal processes and for our clients.
We have multiple databases (MS SQL), we have multiple users (user management and logging functionality is needed in the API platform), we have multiple products (each service is a separate API with some API calls).
To start with, please see the first API documentation. After we set up the platform and the first API, we expect 2-4 more APIs to develop before 2018.
Let the customer manual be your guide to the functionality of the first API. Technical briefing can be discussed. Platform requirements are described in the technical briefing as well.