Open Media

Apple's iOS 27 block wipes out ad IDs, but the cost is still hard to pin down

Oct 20, 2026

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4 min read

Apple's iOS 27 block wipes out ad IDs, but the cost is still hard to pin down

After French ad monetization platform Hubvisor flagged a drop in bid responses, a Pubstack analysis shared with Open Garden tracks several identifiers disappearing on iOS 27. Apple is now spelling out the tracking it wants to block, while the impact on CPMs remains hard to isolate.

Nicolas Jaimes

Open Media

SSPs are answering 30% fewer ad requests on Safari iOS, and Apple may be why

Oct 14, 2026

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2 min read

SSPs are answering 30% fewer ad requests on Safari iOS, and Apple may be why

The drop, flagged by French ad monetization platform Hubvisor, began Oct. 1, two weeks after iOS 27 shipped, timing that fits a blocklist Apple can update remotely.

Nicolas Jaimes

Open Media

Meta shuts out TikTok and decides where its advertisers can send customers

Oct 14, 2026

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2 min read

Meta shuts out TikTok and decides where its advertisers can send customers

Since Oct. 8, Meta has banned TikTok ads and links to ByteDance properties in seven markets – a reminder that buying an audience doesn't buy control of what comes next.

Nicolas Jaimes

Open Media

Pubrunner wants publishers to earn less per visit, more per reader

Oct 9, 2026

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4 min read

Pubrunner wants publishers to earn less per visit, more per reader

The U.S. startup uses AI to trade off ads, subscriptions and loyalty, betting that a visit monetized less can pay off more if the reader comes back – something its pilots have yet to prove.

Nicolas Jaimes

Open Media

Up to 75% of publisher traffic never makes it to audience extension. Here's how to plug the leaks

Sep 16, 2026

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3 min read

Up to 75% of publisher traffic never makes it to audience extension. Here's how to plug the leaks

Bot traffic, consent rates, browser protections, DMP syncing and DSP syncing each shave off part of the audience a publisher thinks it can sell.

Max Legrand

Open Media

Summer hits 2026: five ad tech stories that shape the fall agenda

Sep 2, 2026

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9 min read

Summer hits 2026: five ad tech stories that shape the fall agenda

From Nielsen's $2.15 billion bid for DoubleVerify to ChatGPT Ads landing in France, here is what each of the summer's moves says about where the market is heading.

Nicolas Jaimes

Open Media

Gamned! pits three buying strategies against each other on ChatGPT Ads

Aug 26, 2026

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3 min read

Gamned! pits three buying strategies against each other on ChatGPT Ads

Conversion-optimized CPC came out ahead on day one of ChatGPT Ads in France, though one day of data and no disclosed volumes are not enough to judge the channel.

Nicolas Jaimes

Open Media

European Media Marketplace: Equativ pools European media and data to strengthen the Open Web

Jul 7, 2026

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3 min read

European Media Marketplace: Equativ pools European media and data to strengthen the Open Web

By bringing together the inventory, first-party data and activation technologies of major European media, telecom and e-commerce companies, Equativ wants to make the Open Web easier and more efficient to buy. Its European Media Marketplace promises standardized audience segments, cross-channel activation and more than 70% of advertisers’ budgets going toward working media.

Nicolas Jaimes

Open Media

Confessions of an anonymous media buyer: "The Publicis Media - The Trade Desk affair forced every media agency to justify to its clients that fee-control protocols exist... over very little."

May 27, 2026

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5 min read

Confessions of an anonymous media buyer: "The Publicis Media - The Trade Desk affair forced every media agency to justify to its clients that fee-control protocols exist... over very little."

Two months after reports that Publicis Media US had stopped recommending The Trade Desk following an unfavorable audit, Open Garden spoke to a media buyer about how he reads the affair and what it changed in his day-to-day work.

Nicolas Jaimes

Open Media

Publicis pulls off a masterstroke with LiveRamp... that is already unsettling parts of the market

May 18, 2026

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5 min read

Publicis pulls off a masterstroke with LiveRamp... that is already unsettling parts of the market

By buying LiveRamp for $2.2 billion, Publicis is no longer just adding a data asset. It is taking control of an infrastructure layer used by much of the advertising ecosystem - including its direct competitors.

Nicolas Jaimes

Open Media

Singlespot's Kura aims to replace static DSP targeting with outcome-driven PMPs

Apr 23, 2026

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3 min read

Singlespot's Kura aims to replace static DSP targeting with outcome-driven PMPs

The French location data company is pushing store-visit signals into SSP pre-bid, discarding 90% of bid requests on average to build private marketplaces that learn as they go.

Nicolas Jaimes

Open Media

Google's audience segments dominate programmatic: what feeds them and why they work

Mar 26, 2026

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5 min read

Google's audience segments dominate programmatic: what feeds them and why they work

Google trackers fire in most of France's top apps, and DV360 data puts the average Google segment at 88% of cookied users – yet the segments still outperform.

Max Legrand

Open Media

Exclusive: Reworld Media hands 100% of its open auction programmatic monetization to Sparteo

Mar 11, 2026

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2 min read

Exclusive: Reworld Media hands 100% of its open auction programmatic monetization to Sparteo

The French publishing group's ad sales team will keep selling direct deals, while Sparteo's tools now run across its roughly 60 sites.

Nicolas Jaimes

Open Media

Creator budgets move into the media plan in 2026, and buying follows

Feb 25, 2026

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3 min read

Creator budgets move into the media plan in 2026, and buying follows

The IAB puts U.S. creator economy spending at $43.9 billion next year, and more than half of it will go to paid amplification rather than to the posts themselves.

Nicolas Jaimes

Open Media

What broke the open web in digital advertising, and how to fix it

Feb 11, 2026

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14 min read

What broke the open web in digital advertising, and how to fix it

French digital ad spend hit €12.44 billion in 2025, but eight platforms captured 76% of it while news and media sites slipped to a 5% share.

Max Legrand

Open Media

Nestlé tested five shared IDs on mobile, and only the deterministic one held frequency

Dec 3, 2025

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4 min read

Nestlé tested five shared IDs on mobile, and only the deterministic one held frequency

The test, run with WPP Media inside Equativ's curated marketplace, found hybrid IDs burning a quarter to a third of budget on users who had already hit the cap.

Nicolas Jaimes