Online whiteboard that is edited by a small group of people

This idea came to mind to create an online shared digital whiteboard where multiple people can collaborate in a group. The person who is in charge, the host of the whiteboard, can share the link to that virtual whiteboard, but the user can choose the color that they can draw.<br><br>This can be good for brainstorming, like brainstorming for ideas for a meeting and you have multiple people that can write ideas. Team collaboration for anything you can think of. Or video tutorials for showing how to draw if you can't be in the same room