4.) One account is an email address and password (Virtual business office)
5.) Compatible with Windows, Apple and Android devices.
OneDrive for Business is a cloud storage product similar to DropBox, Google Drive or Microsoft’s consumer level OneDrive (formerly called SkyDrive). OneDrive for Business is built on the same platform as SharePoint and has similar features in terms of being able to store files in the cloud and access or edit them from any device.
Each user gets 5TB (5000GB) of OneDrive for Business storage that can be accessed through the apps on Apple, Android or Windows mobile devices, as well as through the browser.