📘 [Tech English with Articles] Day 1 – What is CI/CD?

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📰 Article: What is CI/CD?

In modern DevOps practices, CI/CD is one of the most important concepts every engineer should understand.
CI/CD stands for Continuous Integration and Continuous Deployment, and it plays a key role in delivering software efficiently and reliably.

Continuous Integration (CI) refers to the process of regularly merging code changes into a shared repository.
Each time new code is committed, automated tests are run to detect bugs early.
This prevents integration issues and ensures that the codebase stays clean and functional.

Continuous Deployment (CD) goes a step further—it automates the process of delivering the tested code to production environments.
Instead of waiting for a manual release, CD allows teams to deploy several times a day.
This results in faster delivery, quicker feedback from users, and reduced chances of human error.

CI/CD pipelines are built using tools like GitHub Actions, GitLab CI/CD, Jenkins, or ArgoCD.
They enable consistent, repeatable, and secure deployments, which is essential in a fast-paced DevOps culture.

In short, CI/CD helps teams release better software, faster.
It increases collaboration between development and operations, making DevOps truly effective.

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🗂️ Key Expressions

1. stand for – ~을 의미하다
   → CI/CD stands for Continuous Integration and Continuous Deployment.
2. shared repository – 공동 저장소
   → All developers commit to a shared repository to enable CI.
3. automated testing – 자동화된 테스트
   → Automated testing helps catch bugs early in the process.
4. release to production – 운영 환경에 배포하다
   → The code is released to production automatically through CD.
5. reduce human error – 사람의 실수를 줄이다
   → Automation helps reduce human error during deployment.

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❓ Discussion Questions

1. Do you use CI/CD in your current workflow? How is it implemented?
   Example answer:
   “Yes, we use GitHub Actions for CI and ArgoCD for deployment. Each pull request triggers a test suite, and once approved, the changes are deployed automatically.”
2. What are the benefits of having a CI/CD pipeline in a DevOps environment?
   Example answer:
   “It helps us release updates quickly and safely. Developers get faster feedback, and there are fewer production issues.”
3. Have you ever faced challenges while setting up CI/CD?
   Example answer:
   “Yes, sometimes the pipeline fails due to YAML errors or missing dependencies. But over time, we learned how to structure workflows more reliably.”