The Horizontal Advantage
Most retail media networks are walled gardens. Amazon knows what you buy on Amazon, and Walmart knows what you buy at Walmart. But PayPal sits on a "transaction graph" that sees across 30 million merchants and 400 million consumers globally. This is not just another ad network; it is the industry’s first horizontal source of truth for how money actually moves across the entire web.
Commerce Media’s Next Maturity Phase
Dr. Mark Grether joins the show from the Possible conference to discuss the 16-month journey of building PayPal Ads. We are moving past the "Wild West" of commerce media, where every retailer built a siloed platform. Grether argues that the next level of maturity requires standardization and industry-wide collaboration. PayPal’s goal is to turn every engagement (whether on CTV, a mobile app, or an LLM) into a shoppable moment powered by the world’s most accurate identity data.
Key Insight #1: The Power of the Transaction Graph
PayPal’s core differentiator is its Transaction Graph, which is a combination of scale and financial-grade accuracy.
Beyond Silos: Unlike a single retailer, PayPal sees the full spectrum of consumer behavior across all verticals.
The Identity Layer: Because PayPal is a financial tool, they have spent 20 years perfecting identity verification to prevent fraud.
Why it Matters: For brands, this means moving past intent (what people search for) to ground truth (what people actually buy).
Key Insight #2: Redefining the Funnel with CTV and LLMs
The marketing funnel is not dead, but its entry points have shifted from search engines to Large Language Models (LLMs) and connected TV.
LLMs as the New Search: Consumers are increasingly starting their discovery process with AI agents rather than traditional search bars.
Closing the CTV Loop: One of PayPal's major announcements is the ability to tie CTV campaigns directly to transactions on any merchant website.
Why it Matters: This allows CMOs to justify upper-funnel spending to their CFOs by proving exactly how a TV ad drove a purchase later in the week.
The Highlight
"The entry point is changing. It is not just waiting for a merchant by investing into search that they will eventually come to your website. That is old school."
Grether’s warning to retailers is clear: if the customer journey starts in an LLM or on a CTV device, you have to be there with a shoppable moment. Waiting for them to find you via search is no longer a viable strategy for growth.
Resources and Announcements
PayPal’s Identity Graph: A new collaboration with partners including PubMatic, Magnite, and Taboola to bring 400 million verified identities to the ad market.
Curated Ads: A new offering that integrates transaction data with CTV campaigns to provide full-funnel measurement.
Honey and Venmo: Key data sources within the PayPal ecosystem that provide browsing and social transaction insights.
Listen to the full conversation here:

