Microsoft OneDrive is a file hosting service that allows users to sync files and later access them from a web browser or mobile device. Everyone gets 5GB of free storage to start, up to 15GB.

In addition to a web interface, Microsoft OneDrive offers apps with offline capabilities for Windows and macOS computers, and Android and iOS smartphones and tablets.

This web app is part of Microsoft Office Online.

More info: https://onedrive.live.com