What is the best way to implement chat inside CMS?

Question

XMPP

Greetings,
There was a task - to make a chat inside the CMS admin panel, to find a solution for communication between users (private) and a group chat.
The solution from the series registered, configured, received the HTML code, inserted it - did not find it.
Are there any ready-made solutions? Service, js library....

Answer 1

So I made a chat decision , if it suits, I can advise on integration issues.