As @auscompgeek noted, EMS (Element Matrix Services) is an existing commercial provider who already manages enterprise customers (some Texas law enforcement age

As @auscompgeek noted, EMS (Element Matrix Services) is an existing commercial provider who already manages enterprise customers (some Texas law enforcement agency, German military intell agecney, many ministires in the government of France, etc.): https://element.io/enterprise-collaboration https://element.io/enterprise-collaboration So, you know, not small clients only. ;-) Also, there are a coupel of other providers too: https://matrix.org/hosting/ https://matrix.org/hosting/