By 2015, Google was much more than a search engine. It was developing self-driving cars, exploring life sciences, and investing in smart home technology. For investors, this sprawling portfolio was confusing. The immense profits from the core advertising business were mixed with the costly, long-term bets on futuristic ideas, often called moonshots by the company. It was difficult to see which parts of the business were performing well and which were expensive experiments.

To solve this, Google underwent a major corporate restructuring. It created a new parent company, Alphabet Inc., and turned the original Google—containing search, YouTube, Android, and ads—into its largest subsidiary. This structure is known as a holding company, an entity that doesn't run operations itself but owns a controlling interest in other companies, called subsidiaries.

This decentralized model gave each subsidiary, known as one of the "Other Bets," its own CEO and a clear mission. For example, Waymo focuses solely on autonomous driving technology, while Verily Life Sciences works on healthcare data and tools. This autonomy allows each company to operate like a nimble startup, with its own culture and goals, but with the deep pockets of Alphabet for funding. At the same time, it creates clear accountability. The performance of each bet is no longer hidden inside Google's massive financial reports.

The new structure brought immediate clarity. For the first time, Alphabet began reporting the financial results for Google separately from the Other Bets. This allowed investors to see the core business's profitability in sharp relief against the significant investments being made in speculative ventures.

While this change provided transparency, founders Larry Page and Sergey Brin wanted to ensure they could continue pursuing long-term, ambitious projects without interference from shareholders focused on short-term profits. They achieved this through a dual-class share structure that has been in place since Google's IPO.

Alphabet has three classes of stock:

• Class A (GOOGL): One share, one vote. These are traded publicly.
• Class B: One share, ten votes. These are held almost exclusively by founders and early insiders.
• Class C (GOOG): One share, zero votes. These are also publicly traded and are often used for employee compensation and acquisitions without diluting voting power.

This system ensures that even though Page and Brin don't own a majority of the company's shares, they command a majority of the voting power. This legal framework insulates their long-term vision from the pressures of the public market, allowing Alphabet to continue funding its moonshots.

The Alphabet architecture is a masterclass in corporate engineering. It is designed to balance the need for focus and accountability in its mature businesses with the freedom and ambition required for groundbreaking innovation.