Jenkins is a self-contained and open source automation server that is customizable and requires setup and configuration at the organization level. Remember in the Jenkins CI chapters, we spent some time installing Jenkins in the Windows, Linux, and macOS operating systems. We also had the ability to configure Jenkins however we wanted. While this is great for software companies with dedicated teams in operations, DevOps, and so on, it is not as great for open source projects where often lone developers are setting up environments for their personal projects.
CircleCI was designed around the principle of open source development and for ease of use. CircleCI can be set up within minutes of creating a project in the GitHub and Bitbucket platforms. Although CircleCI is not as customizable as Jenkins CI in this respect, it has the distinct advantage of...