MQTT is good of integrating home automation stuff. It is the lingua franka of DIY home automation. If you get a ebus software that talks MQTT than you only need use the MQTT binding in OH.
There is only one to choose from. But it’s a v1 binding so if you have the option of using something that talks MQTT that would be better. See eBUS - Bindings | openHAB for details on what the eBud binding required.
