Origins at Stanford (1995-1998)
Larry Page and Sergey Brin met at Stanford University, where both were PhD students in computer science. Around 1996 they began collaborating on a search engine research project that ranked web pages by analyzing the links between them, on the theory that a page linked to by many important pages was itself likely to be important. This link-analysis method became the basis of the PageRank algorithm.
The early prototype was called BackRub, a name referring to the way it analyzed the web's "back links." The founders soon renamed it Google, a play on "googol," the term for the number 1 followed by 100 zeros, reflecting their goal of organizing a vast amount of information. On September 4, 1998, Page and Brin incorporated Google Inc., initially operating out of a garage in Menlo Park, California, rented from Susan Wojcicki, who later became a senior Google executive.
Building Search and Advertising (1999-2003)
Through the late 1990s and early 2000s, Google's search engine gained a reputation for returning more relevant results than competitors, and it quickly grew in popularity. The company moved into offices in Mountain View, California, at the campus that became known as the Googleplex.
Google's decisive commercial breakthrough came with online advertising. In 2000 it launched AdWords, a self-service program that let advertisers buy small text ads tied to search keywords. The model matured into an auction-based system where advertisers paid primarily when users clicked, aligning ad spending with measurable results. Advertising became the engine of Google's revenue and funded its rapid expansion. During this period the company also broadened its product line, introducing services such as Google Images and, in 2004, Gmail and its early mapping efforts.
Going Public and Major Acquisitions (2004-2007)
Google held its initial public offering on August 19, 2004, listing on the Nasdaq under the ticker GOOG. In an unusual move for the era, it used a modified Dutch auction to set the price, offering shares at $85 each and raising roughly $1.67 billion. The stock rose sharply on its first day, and the IPO turned the founders and many early employees into billionaires.
With fresh capital and a soaring share price, Google made a series of acquisitions that shaped its future:
- Android (2005), a mobile operating system startup, bought for a reported $50 million, which became the foundation of the world's most widely used smartphone platform.
- YouTube (2006), the online video platform, acquired for about $1.65 billion in stock.
- DoubleClick (2007), an online advertising technology company, purchased for roughly $3.1 billion, which greatly strengthened Google's display-advertising business.
These deals extended Google well beyond search into mobile, video, and the broader advertising ecosystem.
The Mobile and Platform Era (2008-2014)
The launch of the first Android phones in 2008 positioned Google at the center of the smartphone revolution just as mobile internet use exploded. The same year, Google released the Chrome web browser, which grew to become the most popular browser in the world and reinforced Google's control over how users reach the web.
Google also expanded into enterprise and consumer services with Google Apps (later Google Workspace), cloud infrastructure, and hardware initiatives. In 2011, co-founder Larry Page returned as CEO, taking over day-to-day leadership from Eric Schmidt, who had served as chief executive since 2001 and became executive chairman. During these years Google invested heavily in ambitious research projects, including self-driving cars and other experimental efforts, foreshadowing the corporate structure that would follow.
The Alphabet Restructuring (2015)
On August 10, 2015, Google announced a sweeping corporate reorganization. It created a new publicly traded holding company, Alphabet Inc., with Google becoming a wholly owned subsidiary alongside a collection of other ventures. Larry Page became CEO of Alphabet and Sergey Brin its president, while Sundar Pichai, a longtime Google product leader, was named CEO of Google.
The structure separated Google's core internet businesses, including Search, YouTube, Android, Chrome, and advertising, from more speculative or unrelated ventures grouped as "Other Bets." These included Waymo (self-driving technology), Verily and Calico (life sciences and longevity), and other research-driven units. The reorganization was intended to give the core Google business clearer focus and financial reporting while allowing the long-term bets to operate with more independence. In December 2019, Page and Brin stepped back from their executive roles, and Sundar Pichai became CEO of Alphabet as well as Google, consolidating leadership of the entire group.
The AI Era (2016-2025)
Under Pichai, Google framed its strategy around artificial intelligence, describing a shift from a "mobile-first" to an "AI-first" company. Its DeepMind research lab, acquired in 2014, produced landmark systems such as AlphaGo, and Google integrated machine learning across search, translation, photos, and advertising.
The rise of generative AI intensified competition after OpenAI's ChatGPT gained mass attention. Google responded by launching an experimental conversational assistant, Bard, in early 2023, and in April 2023 it merged its Brain and DeepMind teams into a single unit, Google DeepMind. In December 2023 the company introduced Gemini, a family of multimodal AI models, and in 2024 it rebranded its consumer AI assistant under the Gemini name and wove the technology throughout its products.
Alphabet grew into one of the largest companies in the world by market value, with Google Cloud becoming a significant and increasingly profitable business alongside advertising. At the same time, the company faced sustained antitrust scrutiny in the United States and Europe over the dominance of its search and advertising operations, making regulation one of the defining challenges of its modern era.