https://msdn.microsoft.com/en-us/office/office365/howto/rest-api-overview
以下是上面链接的文字：
Office 365 API functionality is also available through Microsoft
Graph,a unified API that includes APIs from other Microsoft services
such as Outlook,OneDrive,OneNote,Planner,and Office Graph,
accessible through a single endpoint and with a single access token.
如果没有这样的差异,你打算弃用这些吗？
谢谢
Some features may be available on the individual service endpoints,
but not yet on Microsoft Graph. We are working hard to bridge these
gaps. If you require one of these features,you can use the individual
endpoint in the meantime. Check the release notes for details on the
Microsoft Graph features in preview and generally available.
有关详细信息,请参阅文档Choosing your API endpoint.