Microsoft Graph provides one unified API to search all content in SharePoint, OneDrive, Outlook, and other Microsoft 365 services. That changes how we build SharePoint applications.

For example, the Microsoft Graph uses its own query grammar in its APIs, while CosmosDB builds on the widely used Apache Gremlin graph query language. API-based queries tend be relatively simple ...

The Microsoft Graph API is the 'secret sauce' behind Bing for Business, new contextual search for SharePoint and Delve, and more.