rcbrk
If that's the main problem then that's easy to solve! Simply use a free public xmpp server.
I mention the self- and paid-hosting options because businesses tend to like having a sevice agreement backed by a contract, and may have additional specialised requirements not provided by free services (xmpp or otherwise).
XMPP. A business can self-host, there are public servers, or there are many businesses which offer customised xmpp hosting as a service.
I can be federated with other xmpp servers or be a locked-down work-only service, or federate with chosen other servers (such as a client company's xmpp servers).
Jojo Rabbit is a good one.
Arkenfox is a tool to assist setting up stock Firefox.
ffs, every time someone from a community group asks me "Can you have a quick look at our basic website, we just need to change ", and I'm like "sure, i used to do web development, let's have a look [...] FFFFFFUUUUUC...."
"Current AI models cannot forget data they were trained on, even if the data was later removed from the training data set," Han's report said.
Bullshit. You delete the entire model and start again.