The main control system is performed by a KNX based system.
For new installations, I would always prefer a wired solution instead of a radio based solution. The argument that KNX systems are more expensive is only partially true.
This is realized by an IP gateway from EIB. You should be aware, in order to change the IP address, you must switch to a USB or serial gateway. This is needed only once. So best to borrow somewhere.
More real use cases can be found in several subtopics below the main topic "indoor area".
Additionally there are the following topics related to KNX: