This whiteboard is a "digital canvas" that allows you to collaborate in real-time, use your finger/stylus/mouse to draw, and save work automatically. It even lets you draw math equations and it will solve them!
To get the most out of this awesome tool, download the MS Whiteboard App (Windows OS).
You can also use the MS Whiteboard webpage (ideal for a Chromebook). Note it has less features than the app above. It's accessible via your Office 365 login. - https://whiteboard.microsoft.com/
Users can collaborate on the same whiteboard using either the app or the webpage version.
Download the Whiteboard for Education Guide (pdf). View introductory video below:
Find great ideas and tips on the Microsoft Whiteboard Youtube channel.
Read Blog on using Whiteboard in Microsoft Teams.
Get answers to frequently asked questions on Microsoft Whiteboard support page.