The solution offers continuous integration and continuous delivery.

The automation workflow in CircleCI related to third-party applications is very good and allows standardization of applications.

Some of the most valuable features include container-based builds, integration with Bit Bucket (which our organization uses) and being able to store artifacts.

In addition, it has the facility to encrypt environment variables, setup SSH into the build environment, clear caches and, most importantly, is the ability to configure a Circle.yml file which is easy to understand for most users who are not in DevOps, but also for developers.

Since I am an automation developer, I use selenium a lot. It is quite easy to run the tests in circleCI. Without using browserstack or saucelabs or xvfb, circleCI pre-installed chrome/chrome driver and firefox for you. It is quite good.

And it is fast to setup everything. My learning curve of circle is shorter than jenkins and teamcity.