In our 26-criterion evaluation of continuous delivery and release automation (CDRA) offerings, we identified the 15 most significant ones — Atlassian, CA Technologies, Chef, CircleCI, CloudBees, Electric Cloud, Flexagon, GitLab, IBM, Inedo, Micro Focus, Microsoft, Octopus Deploy, Puppet, and XebiaLabs — and researched, analyzed, and scored them. This report shows how each provider measures up and helps infrastructure and operations (I&O) professionals make the right choice.