Too Long; Didn't Read
Continuous integration (CI) of code is now a fundamental part of developer’s workflows, with a handful of tool names familiar occurrences on the CI path. Whilst it has existed since 2011, in the past year or two I have seen increasing mention and usage of CircleCI and its different approach to CI from the open source stalwarts such as <a href="https://jenkins-ci.org/" target="_blank">Jenkins</a> and <a href="https://travis-ci.org/" target="_blank">Travis</a>. CircleCI took a typical SaaS product approach, but one that differed from preexisting options, allowing you to push code and let a service take care of all the configuration needed.