Jenkins Pipeline is a suite of plugins that allows us to implement and integrate continuous delivery pipelines into Jenkins.
A continuous delivery (CD) pipeline is a practice, where you build, test, and deliver an automated expression of your process for getting software from version control right through to your users and customers. Every change made to your software goes through a complex process of multiple stages to being released.
This complex process includes building reliable software, progressing the built software through multiple stages of testing, and deployment.
If you want to learn Jenkins, you can enroll in this Jenkins Certification course by Intellipaat.
Also, watch this video on Jenkins Pipeline Tutorial: