How Collaboration is Redefining the Buyer/Seller Relationship in 2025 [Video]

RTBDAY ’25 highlighted the power of partnerships in navigating AI, measurement, ecommerce, and privacy shifts. Here are seven takeaways publishers need to know now.

While RTBDAY’25 may have been a buy-side event, there were many takeaways for the sell-side. And if there was one theme weaving through the day that might have been subtle, it was that no one is winning alone anymore.

From AI’s growing influence on media buying to ecommerce flexing its muscle and the ongoing game of measurement musical chairs, the event underscored how collaboration is no longer a nice-to-have but a necessity. RTBDAY’25 brought in heavy hitters from eMarketer, Google, Dotdash Meredith, and top retail brands to lay out the next chapter in digital advertising.

Success in 2025 is about working together—whether it’s publishers teaming up with brands, data partnerships taking center stage, or AI bridging the gap between creative and performance. Here are six themes …