Product overview The SaaS Order Management application programming interface (API) provides partner, customer, and order management capabilities for SaaS-based products. It is a web service based on the principles of Representation State Transfer (REST) over HTTP protocol. How SaaS Order Management APIs workSaaS Order Management APIs support three entities that you can create and manage. Environments To send requests using SaaS Order Management APIs, you must set up an environment. Authentication To authenticate requests to SaaS Order Management APIs, you must include the Partner ID and API Key in the HTTP header of the request. Deployment checklist To make sure that you are ready to use SaaS Order Management APIs, review the deployment checklist.