Usage patterns for private documentation and team collaboration?

[jayqi]

What are the practical usage patterns for a team that needs to share private documentation?

Some thoughts:

Host application on private network

Probably the ideal case, but requires a private network, which not all teams may have access to.

Each user runs application locally but configured with same private S3 backend

It seems like this should work? The S3 bucket will be private, but users can configure their local applications with necessary credentials. The local app instances will fetch from the centralized backend storage.