It would be useful to collect and reference any existing provider-specific documentation

It would be useful to collect and reference any existing provider-specific documentation.
Some providers are publishing documentation, and this documentation is usually tailored to how their site is working, making it very useful in addition to the more generic documentation we provide.
Information about networking, default settings and so on can be very valuable.

We would first have to collect this information and then make it discoverable, and have this properly documented here.

Example of site-specific documentation:
* https://docs.cloud.muni.cz/cloud/quick-start/
* https://doc.cc.in2p3.fr/en/Hosting/cloud/network-access.html