Amazon.com broke out sales figures for its Web services sector for the first time on Thursday, calling the sector a $5 billion business.
Amazon Web Services, which includes the company's cloud business, generated revenue of $1.57 billion in first quarter, up from $1.05 billion last year, the Internet retailer announced in its first-quarter earnings report.
"Amazon Web Services is a $5 billion business and still growing fast—in fact it's accelerating," CEO Jeff Bezos said. "Born a decade ago, AWS is a good example of how we approach ideas and risk-taking at Amazon. We strive to focus relentlessly on the customer, innovate rapidly, and drive operational excellence."
Analysts had long anticipated the release of the company's AWS financials, saying they would offer insight into the company's core domestic operations. Shares rallied nearly 6 percent in after-hours trading.
That business, along with increased sales activity in North America, its largest market, helped Amazon beat revenue expectations.