This year a lot of improvements and bugs solution!
- https://www.process-one.net/blog/ejabberd-20-01/
- https://www.process-one.net/blog/ejabberd-20-02/
- https://www.process-one.net/blog/ejabberd-20-03/
- https://www.process-one.net/blog/ejabberd-20-04/
- https://www.process-one.net/blog/ejabberd-20-07/
Do not forget WebSockets:
Other articles: