Continuous Integration (CI) is the practice of keeping a master copy of the software and using tests and merging processes to expand the features of the application. The process of CI is integrated with the Source Code Management (SCM) process. When the source code is updated (for example, in Git), the CI tool checks it and starts the tests. If all tests pass, developers can merge the changes to the master branch.

CI doesn't guarantee that the application will work, because tests can be wrong, but it removes the need to run tests from developers on an automated system. This gives you the great benefit of being able to test all your upcoming changes together to detect conflicts between changes. Another advantage is that the CI system can pack your solution in a container, so the only thing that you have to do is deliver the container to a production cloud. The deployment of containers is also simple to automate.