What’s OpenStack’s killer app? Users say it’s dev and test. According to the latest OpenStack User Survey, most deployments of the open source cloud infrastructure project are on-premises private clouds for dev-and-test work that serve teams of fewer than 100 users.

The survey tallied responses from users running some 260 deployments of OpenStack worldwide, with results available through a portal that allows the data to be tabulated in various ways.

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