uxcon vienna is a "ÖkoEvent Plus". What does that mean?

The "Öko Event" from the City of Vienna is a green certification for events that meet certain environmental and sustainability standards. It's a way for the city to encourage events that are eco-friendly and have minimal impact on the environment. This can include things like reducing waste, saving energy, and using sustainable materials.

The "Plus" in "Öko Event Plus" means the event has gone above and beyond the basic requirements, hitting extra high marks for sustainability.