Implementing Application with Office 365 Graph API in App-only Mode

Microsoft has recently release Microsoft Graph to easily integrate Office 365 resources with applications. Graph API basically provides one single endpoint to call bunch of Web APIs to get access Office 365 resources.

In order to use Graph API from another application, the application must be registered in Azure Active Directory (AAD) first. When the application is registered, we can choose how the application is permitted to use resources – application permissions or delegate permissions. The latter one typically requires users to provide user credentials like username and password to get a proper access token.… [Keep reading] “Implementing Application with Office 365 Graph API in App-only Mode”