Search vs Social Media: Where Should Brands Focus Now

Industry & Competitive Context

The global digital advertising market crossed a historic threshold in 2024, surpassing $1 trillion in total ad revenue for the first time, according to GroupM, the media agency arm of WPP. Within this landscape, two channels continue to dominate brand investment decisions: paid search and paid social media. According to the IAB Internet Advertising Revenue Report (conducted by PwC), paid search advertising in the United States alone reached $102.9 billion in 2024, representing 39.8% of total U.S. digital advertising revenue of $258.6 billion — the single largest share of any digital format. Social media advertising, meanwhile, grew at a significantly faster clip: U.S. social ad revenues rose to $88.7 billion in 2024, a 36.7% year-over-year increase, making it the fastest-growing major digital channel that year.

At the platform level, the duopoly remains formidable. Alphabet (Google's parent) reported total advertising revenues of $264.59 billion globally in 2024, the majority of which derived from search. Meta Platforms reported full-year 2024 revenue of $164.50 billion — a 22% year-over-year increase — with advertising accounting for approximately 99% of that figure, driven by higher ad impressions across Facebook and Instagram and a 10% increase in the average price per ad, as disclosed in Meta's official Q4 2024 earnings press release. Together, Google, Meta, ByteDance (TikTok), Amazon, and Alibaba were projected to capture more than half of the $1 trillion global ad market, according to the same GroupM report.

The strategic question brands face is not simply one of budget allocation. It is a structural question about where consumer attention, purchase intent, and brand-building opportunity are converging — and whether the traditional primacy of search is sustainable in an era increasingly shaped by artificial intelligence and platform-native commerce.

The Core Strategic Tension

For decades, the marketing profession operated on a relatively settled mental model: search advertising captures demand, while brand advertising — across television, display, and increasingly social — creates demand. Search was the closer; social was the awareness engine. This binary served as a useful heuristic for media planning and provided a clean logic for budget allocation between performance and brand teams.

That model is under structural pressure from two simultaneous forces. First, social media platforms — most prominently Meta's Instagram and TikTok — have invested aggressively in lower-funnel capabilities, including shoppable content, in-app checkout, and algorithmic targeting that compresses the path from discovery to purchase. Second, the architecture of search itself is being fundamentally disrupted by generative artificial intelligence, which is altering both how consumers find information and how advertisers can reach them at the moment of intent.

The result is a convergence at the channel level that has no clear historical precedent, and it is forcing brand and performance marketing teams — which have historically operated with separate mandates, separate budgets, and separate success metrics — to reconsider the logic that divided them.

Strategic Objective: The Reallocation Imperative

The central strategic challenge for brand managers and CMOs in 2024 and 2025 is not identifying which channel is "better" in the abstract, but rather determining which channel architecture best matches a brand's specific stage of the purchase funnel, its category dynamics, and its consumer profile — while remaining agile in the face of rapid structural change in both channels.

This case examines the documented evidence on channel performance, budget momentum, and structural disruption to construct a framework for that allocation decision.

Campaign Architecture & Execution: How Spend Has Moved

The budget data tells a nuanced story. In the United States, search advertising grew 14.5% in 2024 to reach $123.6 billion, exceeding analyst forecasts, according to Winterberry Group data reported by Marketing Charts. However, social media significantly outpaced it in growth rate, expanding 19.6% in the same year to $82.7 billion. By 2025, social media's growth continued: U.S. social media ad spend reached $96.5 billion, growing at 16.6% — outperforming what had been forecast at the start of the year. Paid social investment is projected to surpass $110 billion in 2026 for the first time, which would make it nearly as large as the three biggest offline spending categories combined (linear TV, direct mail, and offline shopper marketing), per Winterberry Group's 2026 analysis.

This momentum reflects a deliberate strategic shift by advertisers. Brands are recognising that social platforms now operate as full-funnel environments, capable of generating awareness, driving consideration, and facilitating conversion within a single ecosystem. Meta's own earnings disclosures confirm that the growth in its advertising revenue has been driven by increased impressions alongside a higher average price per ad — signals that both reach and perceived value are increasing simultaneously, which is atypical in a maturing advertising market.

At the same time, search advertising has not lost relevance. The IAB report confirms that search retained its position as the largest single digital advertising format in 2024 at a 39.8% share — though this is a gradual decline from 42.2% in 2020 and 41.4% in 2021. The declining share does not indicate shrinking absolute spend; it indicates that other formats, particularly social and retail media, are growing faster.

Positioning & Consumer Insight: Where Discovery Is Actually Happening

One of the most strategically consequential shifts in this landscape involves consumer discovery behaviour — specifically, where consumers first encounter brands and products they go on to purchase.

According to Sprinklr research published in 2025, 58% of consumers report discovering new businesses via social media, a figure that outperforms both traditional search and television in brand discovery. Globally, internet users spend an average of 141 minutes per day on social media platforms, and 65.7% of the global population are active social media users as of 2025. This level of daily engagement gives social platforms a structural advantage in generating unprompted brand awareness — the kind of discovery that precedes conscious intent.

Search, by contrast, remains dominant in capturing declared intent. Consumers who use Google, Bing, or AI-powered search alternatives are typically already in a defined consideration or purchase mode. The IAB data confirms this: paid search continues to command the highest market share of any digital format precisely because it intercepts consumers at moments of expressed need. The challenge is that those moments are becoming harder and more expensive to own.

Media & Channel Strategy: The AI Disruption Variable

No analysis of the search versus social question in 2025 is complete without examining the structural disruption being introduced by generative AI into the search channel specifically.

Google launched AI Overviews — AI-generated answer summaries at the top of search results — and by Q2 2025, Google CEO Sundar Pichai announced the feature had reached 2 billion monthly users globally, with availability across 200+ countries and territories. According to data from SE Ranking, commercial keywords triggering an AI Overview increased by 128% year-over-year, rising from 8.15% in October 2024 to 18.57% in October 2025. This has significant implications for both organic and paid search strategies.

Google's own Alphabet annual report for fiscal year 2025 noted that the growth in Google Search revenues was driven by interrelated factors including increases in search queries from user adoption on mobile devices, increased advertiser spending, and improvements in ad formats and delivery. YouTube ad revenues also increased by $4.2 billion from 2024 to 2025. However, concurrent with these gains, the broader search landscape is fragmenting. According to analysis published by Basis Technologies in April 2026, Google's search market share dropped below 90% for the first time since 2015 in 2024. ChatGPT, Perplexity, and Gemini have emerged as legitimate search alternatives; by the end of Q4 2025, ChatGPT commanded an estimated 17% of digital queries compared to Google's 78%.

The implications for advertisers are significant. A McKinsey CMO survey fielded with Fortune 500 consumer brand CMOs in September 2025 found that just 16% of brands systematically track AI search performance. The same McKinsey research noted that GEO (Generative Engine Optimisation) performance among even category leaders may lag SEO performance by 20 to 50%. Adobe's 2025 holiday season data revealed that traffic from generative AI tools increased by 693% year-over-year for retail, with AI-driven traffic converting 31% higher than other traffic sources — nearly double the prior year's rate.

OpenAI launched advertising tests within ChatGPT in February 2026, while ads went live within Google's AI Overviews in October 2024 for U.S. mobile users. These developments indicate that paid advertising formats are migrating into AI-native search interfaces, though the commercial scale and measurement standards for these placements remain nascent.

Social platforms have been comparatively less disrupted by AI — at least from a brand investment standpoint. While AI is being used extensively to power ad targeting and creative optimisation within Meta's ecosystem (Meta's 2024 earnings confirmed that AI-powered ad targeting contributed to higher impressions and pricing), the fundamental discovery and engagement mechanics of social media remain intact.

Business & Brand Outcomes: What the Verified Evidence Shows

The verified financial and market data reveals several documented outcomes:

Meta's Family of Apps segment — encompassing Facebook, Instagram, Messenger, and WhatsApp — generated $162 billion in advertising revenue in 2024, as confirmed by Meta's official earnings press release. By 2025, the segment reached $198.76 billion, with 98.7% from advertising. This growth occurred alongside a 10% increase in average price per ad in 2024, indicating that advertisers are both increasing volume and accepting higher costs per placement on social platforms — a strong signal of perceived return.

Google's advertising revenues of $264.59 billion in 2024 continue to underscore search's absolute dominance as a revenue channel, though the growth rate of search (9.9% in 2025, below the 14.2% recorded in 2024) is decelerating relative to social. Alphabet's 2025 Annual Report confirmed continued YouTube ad revenue growth driven by direct response advertising products, reinforcing video-social as a performance channel, not merely a brand-building one.

The IAB's documented finding that retail media networks reached $53.7 billion in 2024 — a 23% year-over-year increase — introduces a third channel dynamic worth noting. Retail media is often classified alongside search due to its intent-based nature (consumers searching within Amazon or Flipkart have high commercial intent), but it operates with first-party data assets that neither pure-play search nor social can replicate. According to Winterberry Group data, retail media is expected to represent over one-third of the U.S. search ad market by 2027, further complicating the search-versus-social binary.

Strategic Implications

The evidence, taken together, does not support a simple prescription of search over social or vice versa. It does, however, support a set of analytically grounded strategic implications for brand managers.

The first implication is that social media has structurally graduated from an awareness-only channel to a full-funnel environment. The financial evidence — $96.5 billion in U.S. social ad spend in 2025, growing at 16.6%, combined with documented improvements in average ad pricing — confirms that advertisers are not merely using social for reach; they are treating it as a performance medium. Brands that continue to evaluate social solely on awareness metrics are likely misallocating budget and misreading their own attribution data.

The second implication is that the structural primacy of search as a demand-capture channel is real but narrowing. Search retains the largest single share of digital ad spend at 39.8% in 2024, but its share has declined from 42.2% in 2020, and the growth of AI-powered alternatives is introducing structural uncertainty into an asset base that brands have traditionally treated as stable. The McKinsey finding that only 16% of Fortune 500 brands systematically track AI search performance suggests that most brand marketing teams are operating with an incomplete view of where their search visibility actually stands.

The third implication is that the AI disruption to search advertising creates an asymmetric risk for different brand types. Categories with long research cycles — financial services, healthcare, technology — where consumers conduct detailed pre-purchase research before acting, are disproportionately exposed to shifts in how search surfaces and monetises that research. Categories with shorter purchase cycles and stronger discovery dynamics — fashion, food and beverage, consumer electronics accessories — may find social's discovery-to-purchase loop increasingly efficient.

The fourth implication concerns measurement infrastructure. The documented fragmentation of the search landscape — with AI Overviews, ChatGPT, Perplexity, and Gemini each capturing different parts of what was formerly a unified Google search funnel — means that legacy search measurement models, built around keyword rankings and Google Ads conversion tracking, are no longer sufficient. Brands that invest in Generative Engine Optimisation capabilities alongside traditional SEO will have a structural advantage in the next phase of search.

The fifth implication is that the search-versus-social framing itself may be the most strategically limiting assumption brands are making. The fastest-growing adjacent channel — retail media — combines the intent signals of search with the inventory of an owned commercial environment. Adobe's finding that AI-driven traffic converts 31% higher than other sources suggests that the more meaningful strategic question for 2025 and beyond is not where to advertise, but which combination of channels best captures consumer intent at each stage of the decision journey, as that journey increasingly crosses platform boundaries.

Discussion Questions for MBA

1. Given that social media advertising grew at nearly double the rate of search advertising in the United States in 2024, what organisational and structural barriers within a traditional brand's marketing department might prevent it from reallocating budget accordingly — and how should a CMO address them?

2. The McKinsey survey found that only 16% of Fortune 500 brand CMOs systematically track AI search performance. What does this gap suggest about the current state of marketing measurement capability, and what would a best-practice measurement architecture look like for a brand competing across both search and social in 2025?

3. Meta's advertising business generated $162 billion in 2024, with average price per ad increasing 10% year-over-year. If social CPMs are rising alongside volume, at what point does social media face the same scalability ceiling that has historically constrained paid search — and what strategic options does a brand have when both channels become expensive?

4. Adobe's 2025 data revealed that traffic from generative AI tools to retail sites converted 31% higher than other traffic sources. Should brands treat AI-native search interfaces (ChatGPT, Perplexity, Google AI Overviews) as a third, separate channel requiring dedicated strategy and budget — or as an evolution of existing search? What are the implications of each framing for how brands organise their digital marketing teams?

5. Retail media networks reached $53.7 billion in U.S. ad spend in 2024 — a 23% year-over-year increase. If retail media combines the intent-capture advantage of search with first-party audience data that neither Google nor Meta can fully replicate, does it represent the most strategically durable channel for performance marketing over the next five years? What types of brands are best and least positioned to benefit from retail media's growth?