For example, in vscode if the sharer start a http-service the port can be port forwarded through the session so anyone in the session can interact with the service.
Maybe I'm opening the lid to the industry's best-kept secret, but every team I've worked on used SSH with a shared tmux session for pairing. There are probably more complex tools that cover every use case, but I never encountered much demand for one.
Anyone can interact with common team servers.
It is one of those things that developer advocates love to show at conferences.