The 4th DigiDays, which we realized as the Department of Public Relations and Advertising and became traditional, was held this year on April 9-10, 2021. Our Public Relations and Advertising doctoral student, Ulaş Bozan, Founder of The Zero Point Project, who was the guest of the event, discussed the subject of “Sustainability in the Digital World” under the moderation of Prof. Dr. Gülay Öztürk.