AI search reshapes SEO and ad budgets

Search is no longer Google’s playground alone. In just a few weeks, three moves have shown how fast discovery rules are changing: Google rolled out AI Mode to billions of users, Meta is advancing its own AI-driven search, and TikTok is scaling its search ad business. For brands, agencies, and anyone building reach through search, that marks a turning point in strategy, budgets, and measurement.

Google’s AI Mode: answers first, clicks later

At Google, recent months have been a showcase of how far the company will lean into AI. AI Mode, powered by the Gemini model, is live globally and places conversational AI summaries at the top of results. Users can interact with Google like a chat assistant, ask follow-ups, and refine queries without leaving the page.

For users who want fast, context-rich answers, that is a clear win. For publishers and marketers, the picture is different. Early data shows click-through rates for sites below AI overviews have dropped sharply—in some cases by more than 50 percent. The zero-click dynamic is not new, but AI Mode is accelerating it.

At the same time, Google stresses that advertisers can benefit. Ads are embedded directly in AI answers: shopping placements and search ads appear inside summaries, not only beside them. With AI Max, a new campaign type that matches creatives to intent via AI without relying on explicit keywords, classic SEM rules are being rewritten. Early testers report double-digit performance lifts while giving up more control to the black box.

The message for SEO and paid search: in an AI-first search world, visibility depends less on a classic rank and more on whether the algorithm cites or surfaces your brand in the answer.

Meta and TikTok chase search budgets

While Google fortifies its position, Meta and TikTok are pushing hard into discovery. Meta, long aiming to automate advertising across its apps, is testing AI-powered search on Instagram and Facebook. Agency leaders say the company is preparing a search product that improves discovery and creates new ad inventory. Improved Instagram search is widely seen as a preview. The goal: keep users and ad dollars inside Meta’s walls.

TikTok is taking a more direct path. Search ads have become a growth engine. Brands can target high-intent queries with keyword campaigns in TikTok search results. Agencies report adoption has doubled in recent months; some brands see lower CPAs and higher engagement when combining TikTok search with upper-funnel social. Notably, campaigns do not only drive TikTok conversions—they also appear to lift Google search performance downstream, suggesting channels complement rather than cannibalize each other.

For Gen Z, the search journey increasingly starts on TikTok or Instagram. For marketers, search is no longer synonymous with Google.

Big Tech wants to own the discovery moment

Behind the platform moves is shared logic: control the discovery moment and monetize it with AI.

• Google embeds ads in AI answers to stabilize revenue as classic search clicks fall.
• Meta wants to turn social feeds into intent engines powered by generative AI.
• TikTok bets on search ads around creator-driven content as a core funnel building block.
• Amazon is pulling back on some Google Shopping spend—a signal of how much traffic it can keep on its own platform.

What marketers should adjust now

Fragmentation of the search landscape forces new priorities in content, paid media, and reporting.

SEO for AI answers, not only rankings

Visibility increasingly means being cited in AI summaries. That requires authoritative, structured content with clear entities, solid markup, and trustworthy sources—classic on-page signals still matter, but evaluation shifts toward answer quality and citability.

SEM becomes intent marketing

With AI Max and conversational search, context and creative matching move to the foreground. Advertisers must brief algorithms with clear goals, assets, and conversion signals—not only keyword lists.

Diversify budgets and channels

Social search is no longer a sideshow. TikTok search ads and upcoming Meta placements open paths to high-intent audiences outside the Google SERP.

Expand KPIs

When AI keeps users on-platform, clicks may fall. Brand mentions in answers, share of answer, and downstream search lifts gain importance—measurement must capture those signals.

Test early, learn fast

The environment keeps moving. Teams that pilot TikTok search or AI Mode ad formats early secure data and learning advantages before competition and CPCs rise.

Distributed, AI-driven search as the new normal

Search is becoming a distributed, AI-assisted experience across platforms. Google must innovate without losing advertiser trust. Meta and TikTok want to turn massive user bases into intent engines and capture search budgets. Teams that integrate GEO, classic SEO, and paid search can secure visibility where answers are formed—not only where a classic click still waits.