CI/CD & Automation

Continuous Integration and Continuous Delivery form the backbone of modern quality engineering. A well-designed CI/CD pipeline catches defects within minutes of a commit, enforces quality standards automatically, and enables teams to deploy with confidence multiple times per day. This topic covers the most widely used CI/CD platforms, how to define and enforce quality gates, how to shift checks even earlier with pre-commit hooks, and how to deploy safely using strategies that minimize risk.

1. 1
   GitHub Actions Guide

   Setting up quality checks with GitHub Actions — workflow YAML syntax, matrix builds, caching, linters, tests, accessibility scans, and branch protection.
2. 2
   Jenkins Pipelines

   Declarative and Scripted pipelines, parallel stages, distributed builds, the plugins ecosystem, and comparison with GitHub Actions.
3. 3
   Automated Quality Gates

   Defining pass/fail criteria for pipelines — coverage thresholds, accessibility rules, security scans, HTML validation, and branch protection.
4. 4
   Pre-Commit Hooks

   Catching issues before they reach the repository — Husky, lint-staged, the pre-commit framework, secret scanning, and commit message validation.
5. 5
   Deployment Strategies

   Blue-green, canary, and rolling deployments. Feature flags, database migrations, smoke tests, and rollback strategies.