# The End of Rented Identity — Nikhil Raj, MetaRouter

S3 E9 · Apr 2, 2026 · 43 min

First-mile data infrastructure, and why traditional audience pipelines are too slow.

### Show notes

Retail media has a timing problem.

Most systems are still built around audience targeting after the fact, instead of capturing data at the “first mile” when the interaction actually happens. By the time you’ve identified the shopper and activated, it’s already too late.

In this episode, Nikhil Raj of MetaRouter explains how that model is changing — from static audiences to real-time behavioral signals that update as users browse.

Nikhil was part of the team that built Walmart Labs after the Kosmix acquisition, where they had to solve identity and measurement without a loyalty program. That constraint led to a different approach to data and advertising infrastructure that is now showing up again across retailers.

#### What we cover

- What “first mile” data infrastructure actually means
- Why traditional audience pipelines are too slow
- How real-time identity changes offsite activation
- How retailers are moving into channels like Google Product Listing Ads
- The role of AI and real-time inference in audience building
- What agentic commerce and new discovery channels might change
- Why bot traffic and wasted spend are becoming a bigger issue