Alexa and Gira Home Server can talk now thanks to 1Home

Amazon approved the US version of 1Home skill. Users from US and the rest of the world except UK, Germany and Austria can now install 1Home skill onto their Amazon Echos and command their Gira smart home.

Here's a guide on how to connect:

Amazon Alexa with your Loxone smart home
Amazon Alexa with your Gira smart home
Amazon Alexa with your KNX IP Interface