What software is needed to broadcast and provide a gaming tournament?

Question

Video broadcast

What software is used to broadcast CSGO and Dota 2 tournaments, for example, Starladder and RuHub? I'm not talking about OBS or Xsplit.
Interested in:
Displaying statistics of teams and players
Switching cameras (driving, reviews of certain parts of the map, an individual player, etc.)
Displaying various animated overlays (advertising, banner, etc.)
In general, I am interested in software that can help organize the broadcast of a CSGO tournament.

Answer 1

1. https://obsproject.com/
2. In-game tournament mods themselves.
UPD: here is a step-by-step description of how to do it - the answer to a question for a person who wants to make a tournament in LAN.