OneDrive is online or cloud storage that comes with your Microsoft account. When you use an account provided by your company or school, it's officially called OneDrive for work or school, but sometimes called OneDrive for Business.
You can use the cloud service to:
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Store and protect your files across all your Microsoft 365 Business tools (including SharePoint and Teams).
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Organize items and collaborate using shared libraries.
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Access files and folders from any device—including your computer, tablet, and phone.