Microsoft's Cloud Business Grew 30%. Here's What the Numbers Really Say

Microsoft's cloud business brought in $63.9 billion in its fiscal first quarter of 2027, up 30% from a year earlier, according to Microsoft's earnings release. A company's fiscal quarter is its own three-month accounting period, which may not match the calendar. Azure, Microsoft's service for renting out computing power and software over the internet, grew 48% over the same period.

Microsoft also reported growth of 31% in "constant currency." This measure ignores changes in exchange rates, the prices of one country's money in another's. The one-point gap means currency movements trimmed the headline number slightly.

That gap was wider a year earlier. In the third quarter of fiscal 2026, cloud revenue of $54.5 billion grew 29%, or 25% in constant currency. That was a four-point gap. So the currency drag appears to have shrunk, though most investors will still base their estimates on the headline 30%.

Compared with the previous quarter, revenue rose $4.6 billion from $59.3 billion in the fourth quarter of fiscal 2026, when growth was 27%. This comparison shows how much the business added in a single quarter, without relying on the year-earlier figure.

The forecast tends to matter more to markets than the past quarter. Microsoft said it expects Azure growth of 49% to 50% in the second quarter, according to Reuters. This kind of forward estimate is called "guidance." Reuters also reported that analysts had expected second-quarter Azure growth of 47.6%, based on data from Visible Alpha, a firm that collects analyst estimates. That average expectation is called "consensus."

The guided range sits 1.4 to 2.4 percentage points above that consensus. A percentage point is the simple gap between two percentages. For a business this large, a gap that size adds up to a meaningful difference in forecast revenue. In my view, it is the kind of number analysts are likely to revise their estimates toward first.

Another figure worth watching is the backlog. In its fourth-quarter fiscal 2026 report, Microsoft said that its commercial backlog, which it calls remaining performance obligation, rose 84% to $678 billion. That is contracted business that has not yet turned into recognized revenue, meaning revenue the company has formally counted.

A backlog growing much faster than recognized revenue offers a view into future quarters. But a signed contract is not the same as money earned. The timing depends on how quickly computing capacity comes online and how fast customers use it. This is why the backlog matters for the Azure forecast. It suggests the growth rate has signed contracts behind it.

Shares show how much the market leans on these forecasts. Reuters reported that Microsoft stock rose more than 15% in late July, its biggest one-day percentage gain in 18 years, after a forecast that the market called stellar. A stock's current price often already reflects what investors expect, which is called "pricing in."

In my view, that reaction shows how heavily a stock can price in future guidance. A strong quarter is mostly known by the time it is reported. A higher growth forecast can reset expectations for several quarters at once.

For anyone following these numbers closely, two questions matter. Does the second-quarter guidance hold? And does the backlog turn into revenue at the pace implied by its 84% growth? Future reports can answer both. One quarter cannot settle either.