The DMEXCO, which stands for Digital Marketing Expo & Conference, is the leading European trade fair for digital marketing and advertising. It is held annually in September at the Koelnmesse in Cologne and was established in 2009. Prior to its renaming in 2009, DMEXCO was known as 'OMD - Online Marketing Düsseldorf' from 2000 to 2008. The event is organised by Koelnmesse GmbH, a company with extensive experience and expertise in the trade fair industry. DMEXCO has emerged as a significant business platform for advertisers, digital professionals, marketers, and agency representatives from both domestic and international contexts. With a clear focus on communication, information, business initiation, and deal-making, it facilitates intense interactions among marketing decision-makers, agencies, and exhibitors, thereby ensuring high-quality networking opportunities. The main themes of the trade fair encompass all aspects of digital marketing and advertising, including Online Marketing, Mobile, Social Media, Programmatic Advertising, E-Commerce, Big Data, and much more. The event showcases a wide array of products and services of interest to marketing and advertising professionals, such as software tools, marketing platforms, and innovative advertising solutions. Exhibitors at the event represent various sectors within digital marketing and advertising, including agencies, technology providers, media companies, and many others. Attendees of the event primarily comprise marketing decision-makers, digital professionals, and agency representatives. In conclusion, it is worth emphasising that DMEXCO is an indispensable event for all professionals operating within the realm of digital marketing and advertising. The Koelnmesse, where DMEXCO takes place, is a modern trade fair centre that is easily accessible by car, train, or plane. Moreover, the city of Cologne itself offers a multitude of attractions and cultural offerings that further enhance the appeal of attending the trade fair. The DMEXCO will take place on 2 days from Wednesday, 17. September to Thursday, 18. September 2025 in Cologne.