What is Jenkins?
👉 Jenkins is a free automation tool mostly used for CI/CD (Continuous Integration and Deployment).

Imagine you're a team leader in cricket. Players (developers) keep coming and updating their scores (code). You (Jenkins) automatically track, compile, and publish the scorecard (app) every time.

🔗 What is Master and Slave in Jenkins?
🧑‍✈️ Master (Controller):
It is the main Jenkins server.

It handles:

UI (Jenkins web dashboard)

Scheduling jobs

Assigning builds to slaves

Monitoring

🧑‍🔧 Slave (Agent):
Extra worker machine that does the actual job like:

Building code

Running test cases

Deploying

🏏 Real-time example:
Cricket match live broadcast.

🧑Master = Live commentary manager (decides who talks, what to update)

🧑‍🔧Slaves = Cameramen (who really capture action on ground)

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