Microsoft's big bet on cloud computing is paying off as the company has surpassed Apple as the world's most valuable publicly traded company.
The software maker's prospects looked bleak just a few years ago, as licenses for the company's Windows system fell with a sharp drop in sales of personal computers.
But under CEO Satya Nadella, Microsoft has found stability by focusing on software and services over the internet, or the cloud, with long-term business contracts.
That 1990s personal-computing powerhouse is now having a renaissance moment, as it eclipses Facebook, Google, Amazon and the other tech darlings of the late decade.
Apple had been the world's most prosperous firm since claiming the top spot from Exxon Mobil earlier this decade. Microsoft surpassed Apple briefly a few times this week, but didn't close on top until Friday, with a market value of $851 billion to Apple's $847 billion. Microsoft hadn't been at the top since the height of the dot-com boom in 2000.
An advertisement is played on a set of large screens at the Microsoft office in Cambridge, Massachusetts, U.S, VOA
Apple's plunge
Microsoft became a contender again in large part because Apple's stock fell nearly 20 percent in November, while Microsoft hasn't done any worse than the rest of the stock market. But the fact that it hasn't done poorly reflects its steady focus on business customers in recent years.
Microsoft lost its luster as people were shunning PCs in favor of smartphones. In 2013, PC sales plunged 10 percent to about 315 million, the worst year-to-year drop ever, according to research firms Gartner and IDC. It didn't help that Microsoft's effort to make PCs more like phones, Windows 8, was widely panned.
But a turnaround began when the Redmond, Wash., company promoted Nadella as CEO in 2014. He succeeded Microsoft's longtime CEO, Steve Ballmer, who initially scoffed at the notion that people would be willing to pay $500 or more for Apple's iPhones.