On 4 May 2023, staff of the ERATOSTHENES Centre of Excellence had the opportunity to attend an online training (webinar) organised by the AI-OBSERVER project advanced partners, University of Rome Tor Vergata and the German Research Center for Artificial Intelligence (DFKI) on the topic of Deep Learning approaches for EO data. Many thanks to our trainers Prof. Fabio Del Frate, Dr Gerd Reis and Ms. Giorgia Guerrisi.