• In the DevOps & DevSecOps Periodic Table, Jenkins stands out as one of the most powerful and widely adopted tools for Continuous Integration and Continuous Delivery (CI/CD).
• It automates repetitive development tasks, ensures faster releases, and improves software quality by integrating security early in the pipeline.
• This blog explores Jenkins—its features, role in DevSecOps, and why it continues to be a backbone tool for modern software teams.

📌 Overview of Jenkins:-

Jenkins is an open-source automation server used to automate building, testing, and deploying software projects. It enables developers to continuously integrate code changes from multiple contributors and detect issues early in the development lifecycle.

Originally developed as Hudson in 2004, Jenkins evolved into a community-driven project and became one of the most essential tools in DevOps.

⭐ Key Features of Jenkins:- 🚀 1. Continuous Integration & Continuous Delivery

1. Automatically builds and tests code after every commit

1. Reduces integration errors

1. Speeds up release cycles

🔌 2. Plugin Ecosystem (1800+ Plugins)

• Supports Git, GitHub, Docker, Kubernetes, AWS, Azure, SonarQube, OWASP, and more
• Highly customizable for any DevOps workflow

🧩 3. Pipeline as Code

• Jenkins pipelines are defined using Jenkinsfile
• Enables version-controlled CI/CD pipelines,

pipeline { agent any stages { stage(‘Build’) { steps { echo ‘Building the application’ } } stage(‘Test’) { steps { echo ‘Running tests’ } } stage(‘Deploy’) { steps { echo ‘Deploying application’ } } } }

🔐 4. DevSecOps Integration:-

Integrates security tools like:

SonarQube

OWASP Dependency Check

Trivy

Snyk

Enables shift-left security

⚙️ 5. Distributed Builds

Supports master-agent architecture

Scales easily across multiple machines

How Jenkins Fits into DevOps & DevSecOps Jenkins in DevOps

Jenkins acts as the automation backbone:

Pulls code from Git

Builds applications

Runs automated tests

Deploys to servers or cloud platforms

🛡️ Jenkins in DevSecOps

Jenkins integrates security checks directly into pipelines:

Static code analysis

Vulnerability scanning

Compliance checks

Security testing before deployment

➡️ This ensures security is not an afterthought, but part of the pipeline.

💻 Programming Languages Used in Jenkins

Java – Core Jenkins engine ** Groovy** – Jenkins Pipeline scripts

Shell / Bash – Automation scripts

Python – Testing and security tools integration

🏢 Parent Company of Jenkins

Original Creator: Kohsuke Kawaguchi

Maintained by: Jenkins Community

Previously supported by: Sun Microsystems & Oracle

👉 Jenkins is community-driven, not owned by a single company.

💰 Open Source or Paid?

Feature Jenkins Open Source Yes License MIT License Cost Free Enterprise Support Available via CloudBees ** 🧪 Jenkins in the DevSecOps Periodic Table:-**

In the DevSecOps Periodic Table, Jenkins belongs to:

Category: CI/CD & Automation

Role: Orchestrator

Impact: Faster, safer, and reliable software delivery

It acts as the central atom connecting:

Source control

Build tools

Security scanners

Deployment platforms

🌍 Real-World Use Cases:-

Automating cloud deployments (AWS, Azure, GCP)

Microservices CI/CD pipelines

Security scanning before production

Containerized deployments with Docker & Kubernetes

🚀 Why Jenkins is Still Relevant in 2025

Despite the rise of GitHub Actions, GitLab CI, and Azure DevOps, Jenkins remains relevant because:

Extreme flexibility

Huge plugin ecosystem

Strong community support

Cloud & container readiness

✨ Innovative Insight: Jenkins as the “Control Tower” of DevSecOps

Think of Jenkins as a control tower:

Every code change reports here

Every test, scan, and deployment is monitored

Every failure is instantly visible

In DevSecOps, Jenkins ensures:

• “No insecure code reaches production unnoticed.”

📝 Conclusion:-

Jenkins is more than a CI tool—it is a DevOps and DevSecOps enabler.

Its flexibility, open-source nature, and massive ecosystem make it a must-know tool for engineers entering the DevOps world.

If you want automation, speed, security, and reliability, Jenkins is still a champion.

Special thanks to @santhoshnc Sir for guidance throughout this assignment.