Try it out. You can try element and jitsi its free. Just test some matrix server with element web client and try out jitsi at their site.
For the self hosted instance yes I think you need a domain and subdomains.
Try it out. You can try element and jitsi its free. Just test some matrix server with element web client and try out jitsi at their site.
For the self hosted instance yes I think you need a domain and subdomains.