This C# and .Net sample code shows how to build applications that call the Azure AD Graph API to read and write directory data. It is a console application that uses the differential query in the Graph API to get periodic changes to user objects in an Azure AD tenant. Microsoft Azure Active Directory, "Azure AD" is used to add authentication and authorization to your web applications and web APIs.
Apigee, the API company, recently announced the launch of a new API Management Solution optimized for software-defined networking (SDN) environments. Apigee's API Management for the Software-Defined Network (SDN), provides the tools required to "build, manage and scale applications for the programmable datacenter."