Niko Home Control II

It seems that everything is working. What i can’t figure out is how i can link Amazon Alexa (on sonos device), to Openhab. I found this link, but that seems to need Openhab Cloud, and i think this binding is just local. https://community.openhab.org/t/official-alexa-smart-home-skill-for-openhab-2/23533

Any ideas?

Thanks for the help so far.

Edit: is this maybe the solution? https://www.openhab.org/addons/integrations/openhabcloud/