As usual, the upcoming autumn months will be packed with exciting expos & conferences, providing vast business opportunities for companies working in the online advertising space. Here are several of them, worth attending in 2025. 

Even though a wide variety of events, focused on digital advertising, take place throughout the entire year, some of the major conferences are usually scheduled for autumn, since the end of Q3 and the beginning of Q4 is the high time to assess the state of the market and exchange outlooks on its future, as well as build partnerships for the year ahead. 

Here are several of them you shouldn’t miss in 2025. 

DMEXCO 2025

When: September 17 – 18, 2025 

Where: Cologne, Germany

Among numerous ad conferences in Europe, DMEXCO remains one of the must-attend events for online advertising companies, even if their business activities aren’t primarily focused on the European market. 

With its motto for this year being “Be Bold, Move Forward”, in 2025 DMEXCO is expecting to bring together over 40,000 exhibitors and visitors, and over 800 speakers across 14 stages to discuss the present & future of the global digital advertising landscape and seize new partnership opportunities in the sector.

The key topics in 2025 will include the ongoing economic challenges and strategies on how to address them, the evolution of AI-driven tech (GAI, agentic AI, and more), retail media advertising, and many more. 

Among the already confirmed speakers are C-suite executives from L’Oréal, Deutsche Bank AG, WPP, IAB Europe, and many more are to be announced soon.

Tickets: visitor tickets will be available in the ticket shop later in May 2025. 

For more information, please visit https://dmexco.com/.

Programmatic I/O New York 2025

When: September 29 – 30, 2025 

Where: NYC, NY

Undoubtedly, the annual Programmatic I/O New York is one of the most prominent events in the programmatic advertising industry, usually gathering top market players to exchange their viewpoints and insights on the hottest programmatic ad trends and forecasts and, certainly, expand their business partnerships.

Some of the key topics for 2025 are expected to include next-gen AI- (and GAI-) driven solutions, data privacy tech, identity resolution, programmatic ad measurement, CTV, ad curation, brand suitability, and more. 

Tickets: the ticket shop for the autumn edition of Programmatic I/O hasn’t opened yet, but given the 2024 data, we can predict that the early bird price for individual passes will range at ~1,600 USD or so. 

For more information, please visit https://www.adexchanger.com/calendar/programmatic-i-o-new-york/.

Advertising Week New York 2025

When: October 6 – 9, 2025

Where: NYC, NY

For those attending Programmatic I/O in NYC this autumn, a good idea would be to visit another significant event in the online advertising space – the annual Advertising Week conference.

In their plans for 2025, the event organizers promise to bring together over 16,000 in-person attendees and 1,200 speakers among forward-thinkers and innovators across the media, tech and marketing industries.

Even though this year’s conference agenda hasn’t been published yet, the event is expected to cover a broad range of topics, from mobile marketing to business growth and B2B lead generation, adtech and martech solutions, generative AI and agentic AI, commerce and retail media, ad measurement and many more. 

Tickets: the discounted price for the standard Delegate pass (valid until May 16, 2025) is 524.30 USD, while its regular price is 749 USD.

For more information, please visit https://advertisingweek.com/event/awnewyork-2025/.

ad:tech Tokyo 2025

When: October 22 – 24, 2025

Where: Tokyo, Japan

The annual ad:tech Tokyo expo & conference is definitely one of the go-to events for digital ad professionals, brands, media and tech companies, especially if they’re already doing business in Japan, or planning to do so in future. 

The event mainly focuses on topics, like interactive media, digital advertising tech innovations, AI-driven solutions, data analysis tools, and more. 

Even though no detailed agenda for this year’s ad:tech Tokyo is available yet, some of its key themed tracks usually include: 

  • data, measurement & tech;
  • content & media;
  • marketing & branding;
  • region-specific insights, etc. 

Tickets: a basic Visitor pass, which enables access to keynote speeches, expo area and expo stage presentations, is free August 1, 2025. Later on, its price will rise to 5,500 JPY (until October 15, 2025), and up to 22,000 JPY on site.

For more information, please visit https://adtech-tokyo.com/en/.