Ad tech’s economy depends on float — and it’s getting pricier to keep it moving

Ad tech has always lived in a world where money moves slower than the ads it sells. Everyone’s floating — fronting payments to publishers while waiting weeks, sometimes months, for agencies and advertisers to settle up. The cost of doing so is only rising. 

Nearly six in 10 invoices (58%) in the sector were paid late in the first half of the year, according to payment data form OAREX. Almost one in five arrived more than two weeks past due — after the original 60, 90 or even 120 days. Granted, this long tail of payments isn’t new. It’s how the machine has always worked. Advertisers push out payment terms. Agencies pass the delay downstream. From there, ad tech vendors draw on credit lines to keep publishers paid. Everyone finances everyone else. And as rates rise, the cost of keeping that wheel spinning climbs with it.

“If nobody was floating money there would be chaos,” said Adam Schenkel, GumGum’s evp of global platform strategy and operations.

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WTF are GEO and AEO? (and how they differ from SEO)

Originally published on May 14, 2025, this article has been updated to include an explainer video.

Move over SEO — there’s a new game in town. 

For publishers and writers, the rules of SEO are changing. Future success no longer looks like being top of the blue links on Google’s index or any other search engine’s – it will center on how to ensure your content gets surfaced in AI answer engines too. And that’s a whole new ball game. Welcome to the era of generative engine optimization (GEO) – or is it answer engine optimization (AEO)? Actually, it’s generative search optimization (GSO), right?

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