OneDrive is a private cloud-based service that is linked to your Office 365 account. It uses data encryption and can only be accessed using your login credentials. Only you or anyone with the required permissions can see your OneDrive files. This may include your IT Administrator. You have the option to share specific files or folders with whomever you choose at any point in time. This is done by sending a link to the file or folder. You can also specify that specific files or folders are Public, in which case, anyone will be able to view them.