Introduction
Jenkins lets you automate tasks like building and testing software. Configuring system settings helps you control how Jenkins works, like setting up tools, security, and environment variables.
When you want to add a new tool like Git or Maven for your builds
When you need to set environment variables used by your jobs
When you want to configure security settings like user authentication
When you want to change the number of executors (parallel jobs) Jenkins can run
When you want to set global properties that affect all jobs