The Office Graph is the unifying link behind Office 365 services, it learns how you work and who you interact with and suggests content to you based off of that knowledge. The Office Graph continuously collects and analyzes you and your colleagues behaviors as you are working within Office 365. For example, if many of your colleagues are working on a particular document then you might also be interested in that particular document. The Office Graph can then suggest content to you based off not only your actions, but your teammates as well. The Office Graph does all of this through machine learning, and the result is truly spectacular.
Think of Delve as the software that brings the insights of the Office Graph to your fingertips. Microsoft has been gradually creating Delve as a home page of sorts for your Office 365 experience as you enter the portal. Delve displays and organizes content on your home page according to what is most likely to be relevant to you right now, and continues to learn from your behavior and actions the longer you continue to use Office 365.
One of the best parts of Delve, is that content permissions are upheld as the Office Graph and Delve are figuring out what content to serve to the user. This means that users will not see content surface in Delve that they do not already have permission to see.
The Graph API
The Microsoft Graph API offers a singular endpoint to access data that are exposed inside of various Office 365 services. The Graph API has common and useful endpoints like “GET my calendar events” or “GET my files” that allow users to build rich applications that support varied work scenarios. Microsoft has really been pushing the Graph API lately, and it seems like they are going to continue to condense existing APIs into the Graph API. The endpoint for the Microsoft Graph is:
The Office Graph Explorer
The Microsoft Graph explorer is a powerful tool that allows you to make requests against the Graph and view the response. Having the Graph Explorer at your fingertips allows you to quickly and easily explore the endpoints available through the Graph. Using the Graph Explorer is free with your Microsoft account so go check it out!