CI/CD

How It Works

CI/CD centers on a pipeline triggered by events such as a Git push, pull request, or tag. The CI stage typically checks out code, installs dependencies, runs linting and automated tests, and builds artifacts (for example, a compiled app bundle or a Docker image). If any step fails, the pipeline stops and reports results, preventing broken code from moving forward.

CD takes the validated artifact and promotes it through environments (staging to production) using scripted, repeatable steps. Delivery usually means the release is ready and may require manual approval; deployment means production updates happen automatically. Common mechanics include environment variables and secrets management, database migrations, health checks, and deployment strategies like rolling updates, blue-green deployments, or canary releases. Rollbacks are often handled by redeploying the previous artifact or switching traffic back to the prior version.

Why It Matters for Web Hosting

CI/CD influences which hosting plan and features you need: SSH and Git access, support for build tools and runtimes, container support, and the ability to run background jobs or deployment hooks. It also affects operational reliability, since automated deployments reduce configuration drift and make it easier to reproduce environments across servers. When comparing hosts, look for compatibility with your workflow (Git-based deploys, staging environments, API access, and safe rollback options) and for limits that could break pipelines, such as restricted outbound network access or short execution timeouts.

Common Use Cases

• Automatically running unit and integration tests on every commit or pull request
• Building and publishing Docker images, then deploying them to a VPS or Kubernetes cluster
• Deploying WordPress or other CMS code changes with version control and post-deploy scripts
• Promoting releases from staging to production with approvals and audit trails
• Executing database migrations and cache warmups as part of a controlled release
• Rolling back quickly by redeploying a previous build artifact or switching traffic

CI/CD vs Continuous Deployment

CI/CD is an umbrella term covering both integration and release automation, while continuous deployment is a specific CD approach where every change that passes the pipeline is automatically released to production. Continuous deployment demands stronger test coverage, monitoring, and rollback readiness, and it often benefits from hosting environments that support immutable artifacts (like containers) and predictable scaling. Continuous delivery is more conservative, keeping releases automated but allowing a manual gate before production.