Alphabet’s cloud revenue grew 82% year over year in the second quarter, and chief executive Sundar Pichai disclosed a $514 billion backlog that caught even bullish investors off guard. The unit now accounts for a little more than 20% of total revenue, up from 14% in Q2 2025, while advertising, still the company’s engine, expanded 14% over the same period.
The backlog is the headline
The $514 billion figure represents contracted revenue not yet recognized, a number that dwarfs the quarterly run rate and signals demand for AI capacity is still accelerating. Nearly 90% of the Fortune 100 are now using Gemini Enterprise, according to Pichai, making the backlog less a speculative pipeline than a committed spend from the largest enterprise buyers. Alphabet’s 14% overall revenue growth in the quarter looks pedestrian beside the cloud segment’s trajectory.
Profit follows revenue
Cloud net operating income more than tripled year over year, outpacing the 20% improvement posted by the Google services segment that houses search and advertising. The profit inflection arrived two years after the unit’s first profitable quarter in 2023, and the margin expansion suggests the heavy infrastructure investment cycle is beginning to convert into operating leverage. Whether that leverage sustains once the current backlog burns off is the open question.
Chasing the leaders
Amazon Web Services still holds 28% of the cloud infrastructure market, with Microsoft at 21%. Alphabet sits at 14%, up from 12% in Q4 2025. AWS growth has reaccelerated, but it remains materially slower than Google Cloud’s 82% clip. At current rates, the gap to Microsoft could close in a few years; catching Amazon would take considerably longer given the absolute revenue difference.
The revenue mix shifts
If cloud sustains its share gains, it could exceed one-quarter of Alphabet’s total revenue next year. That would mark a structural shift for a company synonymous with search, turning the cloud unit into the primary growth driver rather than a diversification story. The market has priced in search maturity; it has not fully priced in a cloud business growing at triple the consolidated rate with a half-trillion-dollar backlog.