JavaScript Office JS

Provides an access token to the add-ins web application

getAccessTokenAsync	M	Calls the Azure Active Directory V 2.0 endpoint to get an access token to your add-in's web application. Enables add-ins to identify users. Server-side code can use this token to access Microsoft Graph for the add-in's web application by using the "on behalf of" OAuth flow. This API requires a single sign-on configuration that bridges the add-in to an Azure application. Office users sign in with Organizational Accounts and Microsoft Accounts. Microsoft Azure returns tokens intended for both user account types to access resources in the Microsoft Graph.