With Continuous Integration (CI), developers submit small, frequent changes instead of large, infrequent changes. When another developer accepts the changes, automated tests and build steps run to ensure that the code works as expected. This action is completed frequently, many times a day with automation running each time thus insuring the code base can Continuously Integrate.

• Automated testing reduces busy work and improves software quality.
• Small, regular code commits reduce the number of integration problems.
• Rapid feedback loops make it easier for new contributors to get started.
• It's fun! Shipping of functional software in small increments is more enjoyable than waiting for someone to manually test a giant code change.

The tests and build steps are typically run in an automation server such as Jenkins or Travis. There are also cloud native/kubernetes solutions such as Tekton.