Some capacity info for a #Jitsi service... here's a trace of CPU, RAM, IO, Disk Load on Jitsi Meet infrastructure with 4-5 participants doing a 3-hour workshop with one shared-browser tab - with participants in CET, MSK, and PST.
Server: single-server instance hosted in an EST data centre. 4 GB Memory / 2 AMD vCPUs / 80 GB Disk