Key Features and Functions include:

End-to-End Encrypted Cloud Storage
All files and folders are encrypted on the user’s device before upload, ensuring that only authorized users can access content. Proton cannot decrypt or view stored data.

Secure File Sharing
Users can share files of any size using encrypted links with optional passwords or expiration dates; administrators can manage access permissions and revoke them at any time.

Cross-Platform Accessibility
The platform supports access via web, desktop (Windows/macOS), and mobile (Android/iOS) applications, enabling secure file access and management across multiple devices.

Real-Time Collaboration Tools
Integrated editors for documents and spreadsheets allow teams to create, edit, and collaborate in real time while preserving encryption and access controls.

Flexible Business Plans
Plans such as Drive Professional and Proton Business Suite provide scalable storage (e.g., 1 TB per user), extended version history, and additional administrative and security controls suitable for enterprise needs.

Administrative and Access Controls
Business plans include features like account delegation, organization keys, two-factor authentication enforcement, and custom branding to fit organizational policies.