What is ci cd testing?
Continuous integration is a development automation method that is always referred to as “CI” in CI/CD. A successful CI involves building, testing, and merging new code changes to an app into a shared repository on a regular basis. It addresses the issue of having too many potentially incompatible branches of an app in development at the same time.
More here https://kodershop.com/blog/review_of_the_best_cd_ci_tools/