Just a few years ago, Thomas Siebel often faced skepticism when encouraging big companies to adopt internet-style cloud computing. Many companies, he said, had qualms about relying on the faraway data centers.
Now his customers have a different concern: One cloud service isn’t enough.
“They don’t want to be tied to one big tech company,” said Siebel, chief executive of C3 IoT, a software company that uses cloud computing to analyze data coming from industrial machines.
And Siebel is adapting. After initially working closely with Amazon, a pioneer in cloud computing, C3 IoT now also has a technology and marketing partnership with Microsoft. And it is negotiating a similar agreement with Google.
For a few years, it looked as if Amazon would run away with the cloud computing business, piling up market share as it has with online shopping. But in the past couple of years, many companies have decided that they don’t want to depend on Amazon alone and are spreading out their business.
That has helped Microsoft most of all. And the software giant has emerged as a strong No. 2 in the cloud market. Microsoft provided further evidence of its rise in the cloud business Thursday when it reported its most recent quarterly financial results.
Microsoft’s Azure unit, which supplies cloud computer processing and storage, and competes most directly with Amazon Web Services, grew by 89 percent over the same period a year ago. The company also reported strong growth in its other cloud offerings.
The competition to supply the foundation layer of computing and software — the cloud-era equivalent of an operating system — is heated and costly. The biggest players, analysts estimate, are spending up to $10 billion a year on their global networks of data centers.
This core cloud business is a $60 billion-a-year market, which grew by 50 percent in the first quarter of this year, according to Synergy Research Group. In that fast-growing market, Amazon holds a 33 percent share, unchanged since the end of 2015. Over the same span, Microsoft’s share climbed from 7 to 13 percent, and Google’s doubled to 6 percent.
John Dinsdale, chief analyst at Synergy Research, predicted that the cloud giants would get bigger and capture a steadily rising share of corporate technology spending — especially as they add capabilities, like machine learning and artificial intelligence.
“The information technology market is going to increasingly gravitate toward a small number of hyperscale cloud providers,” Dinsdale said.
In a recent research report on that market, Gartner identified three top-tier companies — Amazon, Microsoft and Google. And it listed only three others, Alibaba, Oracle and IBM, as their competitors.
“It’s a two-horse race between Amazon and Microsoft at this stage,” said Raj Bala, a Gartner analyst. “Google is making headway, nipping at their heels, but it’s still behind the leaders.”
For Amazon and Google, cloud-computing services were a natural outgrowth of their original businesses — e-commerce for Amazon and search for Google. Both companies were born on the internet.
Not so for Microsoft, which has made the most striking transition to the cloud. Its heritage, corporate wealth and industry dominance were based on selling packaged software and its Windows operating system for personal computers.
Amazon holds some formidable advantages in the cloud market. It has the most customers — some spending more than $100 million a year — and more than 2,000 consulting partners to help companies use increasing amounts of Amazon cloud services.
But Microsoft has the advantage of being mainly a supplier of technology to businesses, unlike Amazon and Google. Its long-standing relationships with corporate customers, analysts say, are helping Microsoft gain ground as mainstream companies increasingly move to cloud technology. Microsoft has recently announced cloud deals with companies including Walmart, General Electric, Bayer, Starbucks and Campbell Soup.
Steve Lohr is a New York Times writer.