GML 2026 and Publicis-LiveRamp reshape ad industry in four days

Four days. That is how long it took for a $2.5 billion identity acquisition, two major Google events, a new OpenAI ad format, a programmatic industry conference, a retail media expansion across 208 grocery stores, and a growing debate about whether AI agents can actually handle complex media plans to stack on top of each other. The week of May 18-21, 2026 produced no single narrative. It produced several simultaneously, and they intersected at almost every seam.

Publicis buys the infrastructure its rivals depend on

The most consequential transaction of the week was announced on Monday, May 18. Publicis Groupe agreed to acquire LiveRamp in an all-cash deal valued at $2.5 billion, at a 30% premium to the prior trading price. A joint conference call was scheduled for 8:00 AM CET that morning to discuss the deal. Closing is expected before year-end 2026, subject to regulatory approvals and a LiveRamp shareholder vote.

PPC Land's May 17 coverage of the deal detailed how Arthur Sadoun, Chairman and CEO of Publicis Groupe, and Carla Serrano, Chief Strategy Officer, posted a video announcement on the day of the transaction laying out the strategic rationale in unusual depth. Sadoun's framing was explicit: whoever controls identity infrastructure controls the AI era. LiveRamp brings data collaboration tools, clean room technology, and data onboarding capabilities that Publicis intends to integrate into its Epsilon data platform and its broader agentic AI stack. The pricing premium reflects infrastructure value accumulated over the past 18 months, including LiveRamp's expansion into authenticated identity signals and its position as a connecting layer between advertisers, publishers, and retail media networks.

The competitive implications arrived immediately. Digiday reported on May 21 that Omnicom, which inherited the IPG client base after its acquisition of that holding company, had already been planning to exit LiveRamp when its contract ran its course in Q1 2028. Publicis buying it moved that date forward. Omnicom CEO John Wren made clear that Acxiom, the data business folded into the combined group, has spent years building its own identity solution called Real ID specifically to avoid third-party dependency for something as foundational as identity resolution. The Publicis deal did not change that plan. It accelerated it.

Digiday's May 20 evolving agencies report framed the deal as the latest data point in a broader redesign of the programmatic middle layer. For years the architecture of digital advertising relied on distinct layers: publishers with SSPs, advertisers with DSPs, agencies stitching the pipes. Sources cited by Digiday see 2026 developments as a redesign rather than an adjustment, with large buyers moving closer to supply to control economics and data flows in ways that were not operationally feasible five years ago.

AdExchanger ran its May 18 daily roundup with identity infrastructure and upfronts negotiations as the defining storylines, noting that identity, infrastructure, and AI-driven buying now take up as much space in upfront conversations as programming decisions. The newsletter also highlighted that podcasts are evolving toward broadcast-style reach as audio audiences grow - a point that connects directly to PPC Land's May 17 data point that 94% of Americans now listen to online audio weekly, up from 57% in 2006 according to Edison Research, and Triton Digital's May 20 expansion of Sounder.AI contextual targeting into The Trade Desk, giving programmatic buyers pre-bid podcast signals.

Google I/O rewrites the search contract with users

On Tuesday, May 19, Google held its annual I/O developer conference and announced five Search-specific changes that PPC Land covered in detail the same day. Each one carries direct consequences for search marketers and SEO professionals.

First: the model. As of May 19, Google replaced the previous default in AI Mode with Gemini 3.5 Flash, described by the company as its newest Flash model delivering sustained frontier performance for agents and coding. The swap applies globally. AI Mode had already surpassed one billion monthly users before this upgrade.

Second: the search box. Google released what it described as the biggest update to the search interface in 25 years - an Intelligent Search Box that expands to accept longer queries, images, and voice. Search Engine Roundtable covered the new box on May 21, noting it had been spotted in testing over the previous year and is now officially rolling out per Liz Reid, Google's Head of Search.

Third: background agents. Google introduced information agents that monitor topics over time without requiring further user input - a shift from reactive to proactive search behavior. PPC Land's May 20 I/O analysis noted that these agents, combined with the upgraded Gemini 3.5 Flash model, connect surveillance of ongoing topics to AI-generated answers that surface without a user returning to type a new query.

Fourth: Personal Intelligence. Google expanded its Personal Intelligence framework - which incorporates a user's own Gmail, Google Photos, YouTube viewing history, and Search history into AI responses - to nearly 200 countries on May 19. This framework had previously been available only as a beta for Google AI Pro and Ultra subscribers in the United States, having launched in January 2026. Two users submitting the identical query may now receive substantially different answers based on their personal data layers. How Google handles data governance at that scale was not specified in the May 19 announcement beyond a general transparency framing.

Fifth: Universal Cart. Google began rolling out its cross-merchant, cross-product shopping cart in the United States on May 19, ahead of its formal presentation at Google Marketing Live the following day. The cart tracks price changes and back-in-stock alerts across items from multiple retailers and allows buyers to check out on Google or transfer the cart to the merchant site.

Search Engine Roundtable's May 19 daily recap observed the expected search ranking volatility that accompanies every I/O announcement - an unofficial but consistently observed pattern that practitioners track for its short-term keyword disruption.

Google Marketing Live: the advertiser-facing layer shifts

The following morning, May 20, Google ran its 13th annual Google Marketing Live, livestreamed from the Bay View campus in Mountain View to more than 100 countries. Chief Business Officer Philipp Schindler opened with a capital expenditure figure: $180 to $190 billion planned for 2026, roughly six times the $31 billion Google invested in 2022. He presented that scale as the reason Google can claim a full-stack advantage from chips to models to ad platforms.

The advertising section was led by Vidhya Srinivasan, VP and GM of Google Ads and Commerce. Her central line - "Now, you can ask Google anything, so the best ads must be answers" - describes a structural shift rather than a new format. Ads inside AI Mode no longer operate as separate units placed above or below an organic result. They are generated dynamically to respond to the specific query and the AI-generated answer surrounding them.

The new formats announced at GML include Conversational Discovery ads and Highlighted Answers - both covered by Search Engine Roundtable on May 21 - as well as shopping ads inside AI Mode and a Business Agent for Leadsthat lets a prospective customer ask a question inside an ad unit and receive an answer drawn directly from the advertiser's website. That leads format is being tested in education, automotive, and real estate. Direct Offers, which surface exclusive discounts at point-of-purchase intent, also appear within AI Mode.

The requirement attached to all of these formats is specific: to appear in AI Search ad experiences, advertisers must adopt AI Max for Search or Performance Max with text customization. Srinivasan was unambiguous - "You can't choose keywords anymore." Dynamic Search Ads will automatically upgrade to AI Max in September 2026, as PPC Land reported separately on May 21. On the same day as GML, paid-search practitioners pushed back publicly, reporting that AI Max routes product queries to generic landing pages rather than matching product pages - the exact task DSA was built to do reliably. Lufthansa Group cited a 24% ROAS increase and IKEA reported a 65% lift in non-branded clicksalongside a 28% boost in incremental ROAS. The independent testing tension that has been documented since AI Max's launch in May 2025 has not disappeared.

On measurement, Meridian - Google's open-source Marketing Mix Modeling tool - was integrated directly into Analytics 360 as a native feature. MediaPost had previewed this on May 5, when Google disclosed the pre-GML measurement push including Data Manager Map View, Meridian GeoX, and Meridian Studio. Ask Advisor, introduced at GML, is an agentic interface that unifies Google Ads, Google Analytics, and Google Merchant Center under a single conversational layer.

On commerce, the Universal Commerce Protocol was formally expanded on May 20 to hotel booking, local food delivery, and three new geographies - Canada, Australia, and the United Kingdom. Affirm and Klarna were added as payment options. PPC Land's May 20 UCP expansion coverage noted that the protocol, which Amazon, Meta, Microsoft, Salesforce, and Stripe joined as co-steerers, is no longer a single-surface retail experiment. It is becoming the backbone of how Google routes commerce across Search, Gemini, AI Mode, and YouTube simultaneously.

Asset Studio, Google's creative home base inside Google Ads, received an integration with Gemini, Veo, and Nano Banana. Gemini Omni - announced at I/O 2026 and combining Gemini reasoning with generative media - will be added this summer. Search Engine Roundtable's May 20 recap noted the same day's Microsoft Advertising monthly releases: updates to import center, cross-account portfolio bidding, and a new bidding strategy report.

OpenAI ads go visual as the format expands

While GML ran on May 20, Digiday reported on May 21 that OpenAI is testing a new ad format inside ChatGPT that features a larger image and an optional call-to-action button that advertisers can personalize. OpenAI confirmed to Digiday that it is running an "early test" of the new experience on a small subset of ads. The visual upgrade follows OpenAI's May 14 rollout of bulk shopping ad creation tools for e-commerce companies and its May 5 opening of a self-serve Ads Manager beta to all US businesses with CPC bidding - covered in depth by PPC Land.

The new format signals a move away from text-adjacent placements toward branded units that can carry imagery, a standard expectation from advertisers used to display and social formats. Combined with the bulk shopping ad tools from the week prior, OpenAI's advertising product has evolved from a proof-of-concept pilot to an expanding commercial offering in roughly six months. Digiday also reported separately the earlier shopping ad improvements, providing context for the pace of iteration.

The Trade Desk, Snap, and agentic campaign management

Digiday's May 21 inside look at The Trade Desk's campaign agent revealed that the company is in discussions with agency executives about its Koa Agents system, which automates significant chunks of the programmatic workflow. The system connects to partner AI models through an interoperability layer called Open Agentic Kit. One workflow described to Digiday connects through Anthropic's Claude: the agent ingests a media plan, reformats it into a template compatible with The Trade Desk's system, and builds the campaign. This architecture - an AI model as the connective tissue between a human planner's document and a DSP's technical requirements - is distinct from simply having AI suggest campaign settings.

The Trade Desk's agentic capabilities arrive alongside Q2 Kokai platform updates covered by PPC Land on May 16: granular per-component control of Koa Optimizations, pause ad open beta, and Deal Desk upgrades with customizable lookback windows. AdExchanger's May 21 daily roundup captured the broader market mood directly: "AI can't handle complex media plans." The headline reflects practitioner-level skepticism that grew louder at AdExchanger's own Programmatic AI conference, held May 18-20 at the Park MGM in Las Vegas - where the gap between AI potential and operational reality in media planning was a recurring theme.

On May 20, AdExchanger reported on Snap's new attribution product, which unifies Snap's internal data with data from mobile measurement partners to produce a consolidated view of performance. Snap's move toward unified attribution reflects the same pressure felt across platforms: buyers want a single source of truth, not multiple dashboards.

Publishers prepare for two webs

A thread running through nearly every source this week is what publishers do when the search that once sent them traffic becomes the answer itself. Digiday on May 18 reported that The Economist is testing agent-readable versions of content already outside its paywall, preparing for what VP of generative AI Josh Muncke called "two versions of the web" - one for humans, one for AI agents. "We want our marketing content to be findable and discoverable and optimized for agents," Muncke said, while acknowledging the tension: optimizing for AI discovery risks weakening the paywall economics that premium advertisers depend on.

AdExchanger's May 19 roundup described Amazon separately cutting affiliate publisher perks, a move that further pressures content businesses that built revenue models around product referral commerce. AdExchanger's May 20 roundup added "containerization" - the holdco strategy of building proprietary tech and data infrastructure rather than depending on shared industry tools - as the new buzzword emerging from agency strategy conversations, and noted that consumer trust in AI search is growing even as publishers lose traffic to it.

PPC Land's May 18 coverage of the ICO's advice noted that the UK's Information Commissioner's Officerecommended easing PECR regulation 6 consent rules for low-risk online ads, covering contextual targeting, frequency capping, and measurement. The recommendation, if adopted, would reduce friction for a category of advertising that does not involve personal profiling - a meaningful regulatory distinction as the industry navigates consent frameworks across European markets.

PPC Land also reported on May 19 a data center study showing that US data centers supported 5.5 million jobs and $927 billion in GDP in 2024, citing PwC findings, while a separate E3 analysis found no clear evidence that data centers raised electricity bills for households - a data point relevant as AI infrastructure investment intensifies public debate about energy costs.

Retail media expands into physical stores and programmatic audio

On May 20, PPC Land covered The Raley's Companies and Grocery TV announcing an in-store retail media networkacross 208 stores spanning six banners: Raley's, Bel Air, Nob Hill, Bashas', Food City, and AJ's Fine Foods. The network covers locations in California, Nevada, and Arizona and connects brands with shoppers at the point of purchase via digital screens managed through Grocery TV's platform. Grocery TV now reaches more than 6,700 stores across 120+ retail partners. The announcement positions in-store retail media as a programmatic channel alongside CTV and display, with inventory accessible through established demand-side platforms.

Digiday's May 19 Retail Media Rewritten feature asked whether retail media networks can survive the shift to agentic commerce - a question that becomes more pointed as Google's Universal Commerce Protocol creates a competing route between search intent and purchase without requiring a visit to any retailer's owned channel.

Perion's Q1 2026 results, covered by PPC Land on May 20, showed CTV revenue up 68%, DOOH up 29%, and total revenue of $90.4 million, with spend through its Outmax AI agent tripling quarter-on-quarter. The company reiterated full-year guidance despite macro headwinds.

MediaPost reported on May 20 that Ford lost global CMO Lisa Materazzo, who had joined from Toyota where she spent 20 years leading North American marketing. MediaPost had recognized Materazzo as its 2023 Automotive Marketer of the Year. Her departure is notable given the scale of automotive digital advertising and the pace of change in that vertical's search and programmatic strategies. The same day, MediaPost noted that automotive advertising now accounts for less than 10% of total US ad category spend.

AdExchanger's May 21 roundup noted that retail media is now landing under CMO remit at more organizations - a structural shift from two years ago, when retail media was largely a performance marketing or shopper marketing function sitting outside the brand team. As retail media measurement has improved and upper-funnel formats have expanded, CMOs have claimed ownership, which changes both budget discussions and the measurement expectations attached to the channel.