Understanding Jenkins Pipeline as Code: Benefits and Practical Usage

Jenkins is the most widely used open‑source continuous integration server in enterprises, and this article explores the concept of Pipeline as Code.

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Before pipelines, teams typically created a large number of freestyle jobs, configuring every setting through the web UI, which made bulk changes cumbersome.

When many parameters needed to be updated, each job had to be edited individually in the console.

Jenkins 2.0 introduced the core feature of pipelines, allowing the entire build process to be described in code, stored in version control, and edited like any other source file.

The advantage is that a single pipeline script can manage multiple projects, and any new steps are simply added to the code.

Below is an example of the pipeline script format that will be used in future implementations.

In summary:

Freestyle jobs store configuration in the UI, making bulk modifications difficult.

Pipeline jobs describe the workflow in code, allowing easy bulk changes by editing the source code, which is especially convenient for operations teams.

If you have many Jenkinsfiles or each contains thousands of lines, managing them becomes challenging; the article hints at future best‑practice solutions for this problem.

Stay tuned for the next session, and if this was helpful, please like and share!