Ecommerce company Amazon.com today said that its Amazon Web Services (AWS) public cloud computing infrastructure division generated $3.23 billion in revenue in the third quarter of the year. That means revenue was up 54.9 percent year over year.

AWS produced $861 million in operating income for the quarter, according to today’s earnings statement. The business unit had $2.21 billion in operating expenses.

For its most recent four quarters, AWS has now fetched $11.08 billion in revenue for Amazon.

A chart showing revenue growth for AWS through the years, updated for the third quarter of 2016.

Above: A chart showing revenue growth for AWS through the years, updated for the third quarter of 2016.

Image Credit: Jordan Novet/VentureBeat

AWS’ competitors include Microsoft Azure, the Google Cloud Platform (under the newly renamed Google Cloud), IBM SoftLayer, and the Oracle public cloud, among others.

AWS news in the quarter includes a price cut for storage snapshots through the Elastic Block Store (EBS), the launch of P2 GPU-backed instances, and the acquisition of Cloud9.

Amazon stock was down more than 6 percent in after-hours trading following the earnings release.