Microsoft Office for iPad is closely integrated with OneDrive, Microsoft’s cloud-based storage system. Sign up for a OneDrive account and you’ll get 7GB of online storage space for free (with an additional 20GB of space if you subscribe to Office 365).
The 20GB of additional space gives Office for iPad users a generous 27GB of OneDrive storage; typically this is more than enough for saving all your Office documents. You can store any kind of files with OneDrive (images, audio files, and files created by other apps, for instance), and documents created with the Microsoft Office for iPad apps are saved directly to OneDrive by default.
