The other day Microsoft released their public preview of the Microsoft Whiteboard application to Office 365 Customers. Whiteboard is just as it sounds - a whiteboard application built for designing, sketching, drawing etc. When I tried it on a Surface Hub I was really impressed by how well it worked. Here's the official video about it:
Office 365 Administrators can activate the product for their Tenant from the Admincenter -> Settings -> Services & add-ins -> (scroll down to) Whitebord and enable the slider: Turn Whiteboard on or off for your entire organization.