Chapter 20: Basic Concepts of DevOps
In this chapter, you'll learn what DevOps is, how it connects development and operations, what the CI/CD pipeline does, what infrastructure as code means, and how Linux underpins all of it.
In Chapter 19 of the LFCA Certification Course, you completed Module 4 by covering SSH hardening, Fail2ban, advanced firewall rules, Nmap scanning, and authentication log monitoring, finishing the Security Fundamentals domain of the exam.
Module 5: DevOps Fundamentals begins here. This module covers the DevOps domain, which accounts for 12% of the LFCA exam and is tested primarily at a conceptual level.
Rather than focusing on commands to memorize, the exam expects you to understand what DevOps is, why organizations adopt it, how modern development and operations teams collaborate, and how Linux supports every stage of the DevOps lifecycle.
In this chapter, you'll learn the foundational concepts behind DevOps: where DevOps came from, the problems it was created to solve, and the cultural and organizational changes.
It introduces the structure and purpose of CI/CD pipelines, how Infrastructure as Code replaces manual server provisioning, and why Linux remains the platform that underpins most modern DevOps environments.
Every concept in this chapter applies regardless of the cloud provider, Linux distribution, programming language, or DevOps toolchain being used.