Video recording and slides of the webinar "How to Address Open Science in EU Projects" that took place on Juni 9, 2022, 10:00 to 11:30, online, as part of the event series "Research Data Management in Austria". With the start of the EU’s Horizon Europe, Open Science is a prerequisite for successful applications. But other funding bodies also increase their funding when projects use Open Science methods. Science should be open, data should be accessible and the public should be involved. Although Open Science is gaining more importance than ever, the definition and the methods that are counted as such are often unclear. In this webinar, the definitions of the different Open Science elements of the European Commission will be explained. It also provides practical guidance for implementing the so-called mandatory and recommended Open Science practices.