Integrate the Microsoft Graph API in your JavaScript applications and harness a rich source of organizational information and functionality such as Mail, Calendars, Users, Groups, Applications, and a lot more. Any serious application integrating with Office 365 has to integrate with Microsoft Graph. Given the multitudes of ways to integrate, it is non-trivial to make it happen. Enlisting the approach of defining the problem, explaining the concept, and providing a usable solution, the author teaches the viewer by example. The video is succinct, bypassing marketing fluff to get to the usable code that you can start using right away 

Anyone who is interested in learning how to integrate Microsoft Graph functionality into a JavaScript application. It is highly recommended that the viewer be proficient in writing client-side JavaScript-based web applications.