Android is now the most popular operating system in the world, knocking Windows off the top spot for the first time. Android is on the way up, passing Windows on the way down. And that has to be a cause for concern for Microsoft.

Research from web analytics company, StatCounter found Android now accounts for a larger share of internet usage than Windows. During the last month, March 2017, Android users represented 37.93 percent of activity on StatCounter’s network, while Windows accounted for 37.91 percent.

StatCounter — which bases its findings on 2.5 million websites that it claims generate more than 15 billion monthly page views — tracked the gradual converge of usage for the two operating systems over time.

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Internet usage based on operating systems Match 2012-March 2017.

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“This is a milestone in technology history and the end of an era,” commented Aodhan Cullen, CEO, StatCounter.

“It marks the end of Microsoft’s leadership worldwide of the OS market which it has held since the 1980s. It also represents a major breakthrough for Android which held just 2.4% of global internet usage share only five years ago.”

Though Android leading the chart is because of the Android-powered smartphones, while Windows continues to dominate the desktop landscape – but dethroning Windows has to be Android’s biggest achievement.