SharePoint Online
The document storage and collaboration platform behind Teams files and company document libraries.
Nearly all Microsoft 365 file storage is SharePoint underneath, including the Files tab in every Teams channel. Permissions, versioning, and retention all operate at this layer.
Oversharing is the recurring problem. Links created as anyone with the link accumulate over years, and it is usually the first thing that becomes visible when Copilot is switched on.
Where this comes up
SharePoint Online sits inside our microsoft 365 and cloud work. If you are trying to work out what this means for your own environment rather than in the abstract, that is the page worth reading next, and a short call will get you a straight answer faster than either.
Related terms
OneDrive for Business Per-user cloud file storage in Microsoft 365, synced to devices and backed by SharePoint. Oversharing Files and sites shared far more broadly than intended, usually through links that grant access to anyone in the organization. Microsoft Teams Microsoft's chat, meeting, and collaboration application, layered over SharePoint, Exchange, and Entra ID. Sensitivity label A tag applied to a document or email that carries protection with it, such as encryption or access restrictions.