With API Center, you can bring your APIs from Apigee, such as AWS API Gateway or MuleSoft API Management. The idea is to have a single inventory for all of your APIs.

An API gateway is a server or middleware component that acts as an intermediary between clients and backend services, enabling centralized management, security and routing of API requests.

Microsoft has purchased Washington, D.C. startup Apiphany, a maker of an application-programming-interface management platform, which it plans to make available as part of Windows Azure.