The DMEXCO (pronounced D-M-EXCO[citation needed] / Digital Marketing Expo & Conference) is an annual trade fair for digital marketing and advertising. The largest congress trade fair for the digital industry in Europe has been held in Cologne, Germany since 2009. From 2000 to 2008, DMEXCO's predecessor was the online-marketing-duesseldorf (OMD) trade fair.
The trade fair covers marketing methods such as online marketing, targeting, tracking, digital content (video and audio advertising), social media marketing, mobile marketing, performance-based marketing, affiliate marketing, e-mail marketing, search engine marketing and In-game advertising as well as topics like virtual and augmented reality, connectivity and the Internet of Things.
Marketers, agencies (media agencies, media planning agencies, advertising agencies, full-service agencies) and technology service providers have the opportunity to present their products and services at the fair.
DMEXCO is organized by Koelnmesse, the conceptual and technical sponsors are the Bundesverband Digitale Wirtschaft (BVDW) e. V. and the Online-Vermarkterkreis (OVK). Further official partners are AGOF (Arbeitsgemeinschaft Online Forschung), Art Directors Club Germany, Fachgruppe Online-Mediaagenturen (FOMA), GWA (Gesamtverband Kommunikationsagenturen), IAB Europe (Interactive Advertising Bureau) and OWM (Organisation Werbungtreibende im Markenverband).
Since 2009, DMEXCO has taken place annually.