CD/CI

continuous deployment: A software development discipline where software is released continuously as part of an automated pipeline.
continuous delivery: A software development discipline where software is built so that it can be released to production at any time.
continuous integration: A software development practice where contributors are integrating their work very frequently.
Difference between continuous delivery and continuous deployment: Continuous delivery means the code CAN be released at any time, while continuous deployment means it is released continuously.

Jenkins