Which service is suitable for closed distribution of files to partners?

Question

Project management

The company has a number of partners who need to organize access to files/materials. Files should be available only to partners and no one else.
In addition, the materials will be updated periodically, about which partners should receive notifications.
What project management service is suitable for these purposes?

Answer 1

How many partners? Maybe a dropbox with a shared folder?

Answer 2

ftp

Answer 3

Google Docs & Google Drive

Answer 4

It is not necessary to look for a project management service with such built-in functionality. There you can store links to cloud storage, of which there are a lot now. Notifications for changes within a file can be sent by GoogleDrive.