Alphabet and Microsoft will report quarterly results after market close on Wednesday, October 28, and the numbers will function as a live audit of the AI infrastructure buildout. Wall Street consensus, as compiled by Zacks and reported by Yahoo! Finance, expects both companies to post strong growth while investors weigh whether hundreds of billions in capital spending generate proportional returns.
The core question is simple: does AI demand convert into profitable revenue at the pace the capex implies? Wednesday's reports deliver the first hard data points of the season, with Amazon following on Thursday.
Alphabet Q3 expectations: Google Cloud as the growth engine
The Zacks Consensus Estimate puts Alphabet's Q3 earnings at $2.94 per share, up more than 2% year over year. Revenue excluding traffic acquisition costs is projected to rise nearly 28% to $111.8 billion.
Google Cloud carries the heaviest expectations. Zacks projects cloud revenue of $29.15 billion, up 92% from $15.15 billion in Q3 2025. The unit posted 82% growth in Q2, and analysts at Yorkville Ives note the backlog exceeds current capacity, which they argue justifies the spending, according to The Daily Upside.
Alphabet also brings new products to the report: Gemini 4 Argon and a Gemini enterprise AI agent, deployed across Workspace, Search, and cloud services. Watchers will parse AI search monetization, competition from alternative AI platforms, and a forecast capital expenditure of $195 to $205 billion for the year.
Microsoft fiscal Q1: Azure acceleration and Copilot monetization
Microsoft is expected to post fiscal first-quarter earnings of $4.71 per share, up 14%, on revenue of $90.58 billion, up more than 16%. Management guided Azure revenue growth to accelerate to 44-45% in constant currency, with Intelligent Cloud revenue projected at $40.95 to $41.25 billion, representing 33-34% annual growth.
Last quarter Microsoft Cloud revenue rose 27% year over year to $59.3 billion, while Azure and other cloud services grew 43%. Yorkville Ives expects Azure to land at the high end of the 44-45% guidance range.
Quarterly capital expenditures could exceed $50 billion. Higher depreciation from the expanding AI infrastructure base may pressure cloud margins, a variable investors will price in real time. As Saxo Bank observes, the three hyperscalers face a trillion-dollar question: proving AI demand translates into profitable business.
Valuation: two protocols, two price tags
Year to date, Microsoft shares are up 10% and Alphabet up 3%, both lagging broader indexes as capex concerns weigh. Over three years the picture inverts: Alphabet returned nearly 160%, beating the market, while Microsoft's roughly 60% gain trailed the S&P 500 and Nasdaq.
At recent prices near $320 for Alphabet and $530 for Microsoft, GOOGL trades at roughly 20X forward earnings versus 25X for MSFT. Alphabet's discount reflects its accelerating cloud growth and established advertising base. Microsoft's premium reflects enterprise software leadership, recurring revenue, and the integrated Azure and Copilot ecosystem.
Business Insider reports that three hyperscalers worth a combined $10 trillion in market cap report this week, giving investors another round of feedback on AI sentiment. The broader context, per Foreign Policy Journal, is whether the hundreds of billions poured into AI infrastructure are producing meaningful revenue growth across Microsoft, Alphabet, Amazon, and Intel.
What the reports will actually measure
Strip out the sentiment and Wednesday measures three variables: whether cloud demand outruns capacity, whether AI products monetize at enterprise scale, and whether margins survive the depreciation curve of the buildout.
Zacks ranks Alphabet a Buy (Rank #2) on positive estimate revisions and the more favorable valuation. Microsoft sits at Hold (Rank #3). The ranking encodes a clear position: Alphabet offers more upside if Google Cloud and AI monetization exceed expectations, while Microsoft's returns are already priced into its premium.
The market closes Wednesday, the numbers post after hours, and the capex thesis gets its quarterly verification. The infrastructure is built. The revenue either follows or the model gets revised.
FAQ
When do Alphabet and Microsoft report Q3 earnings?
Both companies report after market close on Wednesday, October 28, 2026.
What is Google Cloud revenue expected to reach?
Zacks projects $29.15 billion, up 92% from $15.15 billion in Q3 2025.
What Azure growth does Microsoft guide for the quarter?
Microsoft expects Azure revenue growth of 44-45% in constant currency, with Intelligent Cloud revenue of $40.95 to $41.25 billion.
How much is Alphabet spending on capital expenditures?
Alphabet forecasts annual capital spending of $195 to $205 billion.