The webinar “Dealing with Data Spaces”was performed on September 22 by ATOS in collaboration with IDSA, under the scope of the OPEN DEI project. The speakers Marko Turpeinen (CEO at 1001lakes), Mike de Roode (Business Process Management at TNO), Juan Carlos Pérez (Researcher & Project Director in Blockchain, Identity & Privacy Unit at ATOS Spain) and Arturo Medela (Project Director in Energy, Climate & Decarbonization Unit at Atos Spain) dealt with several data spaces topics such as Data spaces governance, Data spaces model & interoperability, Security in data spaces and Data spaces added value.