In DXA 1.x versions, we used
cd_dynamic_conf.xml to define all the domains and websites that we have and map it to the Publication ID.
Now, we are starting our first project in DXA 2.0 and SDL Web 8.5 and we don't see if we need
cd_dynamic_conf to do this mapping or now is managed in other part.
Where is managed the mapping of website (language) and Publication ID?