Microsoft Teams seamlessly integrates with OneDrive and SharePoint for efficient file storage and sharing:

OneDrive integration:

• Files shared in private chats are stored in your OneDrive
• Access OneDrive files directly within Teams
• Share OneDrive files in chats or channels

SharePoint integration:

• Each team has a SharePoint site for file storage
• Files shared in channels are stored in the team's SharePoint site
• Team members can access and edit these files collaboratively

Key features:

• Files tab: Access team files stored in SharePoint
• Cloud storage: Add other cloud storage services
• Co-authoring: Edit Office documents simultaneously
• Version history: Track and restore previous versions

How to use:

1. In a chat or channel, click Files tab
2. Select Add cloud storage to connect OneDrive or other services
3. Upload, share, or create new files directly in Teams

Tips:

• Use Sync to access team files offline via OneDrive desktop app
• Share link to OneDrive/SharePoint files for easy collaboration
• Set appropriate permissions when sharing sensitive documents

For more details, see Microsoft's guide: Collaborating with Teams, SharePoint, and OneDrive