Alphabet (NASDAQ:GOOG | GOOG Price Prediction)(NASDAQ:GOOGL) remains the dominant force in search and digital advertising, holding approximately 90% of the global search engine market share and capturing over 85% of search advertising spend worldwide. Advertising revenue, primarily from Google Search and YouTube, accounts for about three-quarters of Alphabet’s total revenue, with third-quarter advertising at $74.2 billion out of $102.3 billion total. This core business continues to deliver strong growth, with Search & other advertising up 15% year-over-year during the period.
Until earlier this year, though, Alphabet traded at valuations reflecting an advertising-dependent company, with concerns over cyclical ad spending and competition. However, starting early April, investor perception shifted dramatically. The market began pricing Alphabet as an artificial intelligence (AI) leader, driving significant stock appreciation and multiple expansion as AI adoption accelerated across its products.
From Ad Giant to AI Powerhouse
Amid broader market pressures and lingering AI disruption fears, Alphabet’s stock hit lows, contributing to compressed valuations. Coinciding with its stock’s decline, Alphabet’s enterprise value-to-earnings before interest and taxes (EV/EBIT) hit a multi-year low, reflecting caution around its ad reliance. It is a different story today.
At current valuations, Alphabet’s EV/EBIT multiple reached around 23x, up substantially from earlier lows and in line with multiples of its higher-growth tech peers. This re-rating pushed the stock up over 64% year-to-date, with gains accelerating as AI momentum built.
What is EV/EBIT?
EV/EBIT is a valuation multiple that divides a company’s enterprise value (EV) — the market capitalization plus debt minus cash — by its earnings before interest and taxes (EBIT, or operating income). It measures how many times operating earnings the market values the entire business, including debt. A higher multiple indicates investors expect stronger future growth or profitability, while lower multiples suggest caution or maturity.
Alphabet’s surge stems from its control over the full AI stack: proprietary models from Google DeepMind (Gemini series), custom hardware (TPUs), cloud infrastructure (Google Cloud), and massive distribution capabilities via Search, YouTube, Android, and billions of users. This vertical integration enables rapid AI deployment and monetization.
Google Cloud revenue, for example, grew 34% year-over-year in Q3 to $15.2 billion, fueled by enterprise AI demand, with the segment’s backlog reaching $155 billion. AI enhancements boosted Search engagement (AI Overviews drove over 10% usage increases in key markets) and ad performance, while Gemini gained traction. The situation is the opposite of what Microsoft (NASDAQ:MSFT) experienced.
Why Microsoft Lost the Early AI Lead
Initially, Microsoft was expected to dominate AI valuation re-rating through Azure integration and Copilot proliferation across Office, Windows, and other products. Early partnerships positioned it to capture new revenue from enterprise AI adoption.
However, momentum stalled in mid-2025, with only occasional bumps in its stock price to offset its otherwise languid performance. Since then,though, Microsoft shares have declined 12% from their peak and are up just 15% year-to-date as concerns over AI monetization timelines and its ability to generate returns on its massive capital expenditures.
Microsoft has been spending tens of billions of dollars on capex quarterly to support Azure AI growth, outpacing some expectations and raising questions about near-term ROI. Reports highlighted challenges it was facing converting pilot interest into scalable revenue for Copilot and AI agents, alongside debates on sustaining margins amid heavy infrastructure spending.
In contrast, Alphabet’s vertical integration and faster perceived AI progress drove its outperformance.
Key Takeaway
Search and advertising remain vital to Alphabet, of course, generating the bulk of revenue and profits with no near-term change expected. Google maintains 90% search share despite increasing AI competition, and ad growth accelerated in 2025.
Yet the market now views Alphabet differently — as one of few companies fully integrating AI across operations, from research to products and infrastructure. This has unlocked new revenue streams, like Cloud AI services and subscriptions, with potential for significant expansion.
Risks remain, including regulatory scrutiny and debates over AI valuation bubbles. However, AI’s adoption is irreversible and accelerating, and Alphabet’s full-stack advantages position it to capture growing value, suggesting the tech behemoth will continue to become more valuable over time as well.
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