OneDrive is Microsoft's cloud storage platform that stores your files on remote servers rather than just on your computer. It works as a folder on your PC, Mac, or mobile device that automatically uploads changes to the cloud, so your documents stay synchronised across all your gadgets.
You get 5GB of free storage with a Microsoft account. Microsoft 365 subscribers get 1TB per user, whilst enterprise customers get significantly more. The service integrates directly into Windows Explorer and macOS Finder, making it feel like a normal folder rather than a separate application.
Why it matters: OneDrive lets you work on files at home, continue editing on your laptop at a cafe, and access the same version on your phone without manually copying files around. It handles version history automatically, so you can recover earlier versions if you accidentally overwrite something important. Collaboration works through tight integration with Microsoft Office applications.
Common issues to know about: Syncing can consume bandwidth and slow older machines, especially if you've got thousands of files. Some users find it aggressive about uploading data. File name compatibility varies across Windows and Mac. If your internet drops, you can't access cloud-only files unless you've specifically marked them for offline use.
What you should do: Check your actual storage allocation before relying on OneDrive as your main backup. Understand the difference between synced files (kept on your device) and cloud-only files. Enable two-factor authentication on your Microsoft account for security. If you work with large video files or databases, consider whether OneDrive's syncing approach suits your workflow.