TL;DR: we’re building audiences from website visitors, and segmenting them using URL rules and retention window.
If you're running CTV retargeting today, you're probably serving the same ad to everyone who touched your domain. The person who read a blog post once. The prospect who spent 20 minutes on your pricing page. The enterprise buyer who visited your /enterprise/ page three times this week. Same ad. Same audience. Same waste.
Custom Web Traffic Audiences changes how you retarget on CTV. Here's what you can actually do with it.
A skincare brand builds three audiences: /moisturizers/, /serums/, /sunscreen/. Each gets its own ad. No more serving a retinol ad to someone who was shopping for SPF.
Flash sale running for 5 days? Build an audience from /sale/ with a 7-day window. Only the people who actually visited the sale page see the urgency creative.

Pricing page visitor gets a "start your trial" ad. Enterprise page visitor gets a "talk to sales" ad. Same pixel, completely different campaigns.
Long sales cycle? Set a 90-day window on /demo-request/. Stay in front of prospects who raised their hand but didn't convert yet.

Someone visited your pricing page, didn't convert, and you have no way to follow them outside of Meta and Google. Until now.

With a /pricing/ audience and a 14-day window, you're reaching that exact prospect on streaming TV while your competitors are nowhere near that inventory. You control the message, the creative, and the context. You're not bidding against every brand with an "in-market" segment. You're reaching someone who was already on your site, already comparing options, already close.
For agencies handling various clients with 10 product lines, 10 pages? Build 10 audiences. Each campaign has its own message, its own window, its own results.

Black Friday page goes live. Audience starts building immediately with a 7-day window. Sale ends, audience expires. Clean in, clean out.
You need a Page View pixel installed. From there, go to the Custom Audiences page, build your first Web Traffic audience, set your retention window, and attach it to any retargeting campaign. Custom Web Traffic Audiences is rolling out now and fully available by end of week.
Start using it today.