DevOps = Development + Operations

DevOps is a culture, practice, and set of tools that integrates:

• Development Team (Dev)

• Operations Team (Ops)

 Goal:

To deliver software faster, reliably, and continuously

Before DevOps, organizations followed:

Traditional Model (Silo Structure)

Developers    →    Testing    →    Operations

(Separate Teams – No Collaboration)

❌ Communication gap

❌ Blame culture

❌ Manual deployments

❌ Slow releases

❌ Production failures

 Before 2000 – Waterfall Era

Most companies used the
Waterfall model

• Sequential development

• No feedback until final stage

• Long release cycles

2001 – Agile Movement

✔ Iterative development
✔ Faster delivery
✔ Customer collaboration

But still:
 Operations team was separate.

2008–2009 – Birth of DevOps

DevOps term popularized by:

 Patrick Debois

First DevOps Days conference held in:

Ghent (2009)

This marked the official beginning of DevOps culture.

Frequent production failures
Slow deployments
Manual processes
High downtime
No ownership

Faster releases
Automation
Better collaboration
Continuous monitoring

Real Industry Problems:

Companies needed:

Thus, DevOps was introduced.

DevOps Lifecycle Stages:

DevOps follows Continuous Integration & Continuous Delivery (CI/CD)

Requirement gathering (Jira, etc.)

Developers write code

Compile source code into executable

Automated testing

Prepare build for deployment

Deploy into production

Manage servers & applications

• Monitor

Track performance & errors

 1. Faster Delivery

5. Cost Reduction

6. Better Security

4. Improved Quality

3. Continuous Integration

2. Better Collaboration

Planning Tools

• Jira

• Trello

Version Control

• Git

• GitHub

Build Tools

• Maven

• Gradle

 CI/CD Tools

• Jenkins

• GitLab

Monitoring Tools

• Prometheus

• Grafana

Configuration Management

• Ansible

• Puppet

Containerization

• Kubernetes