GitLab CI/CD is a comprehensive continuous integration and delivery platform integrated directly into the GitLab DevSecOps platform, providing pipeline automation alongside source code management, issue tracking, and security scanning in a single application. Pipelines are defined in a .gitlab-ci.yml file at the root of each repository, using a YAML syntax that describes jobs, stages, and their dependencies. GitLab CI is available on both the SaaS platform and self-managed installations, giving organizations full control over their CI/CD infrastructure.
The platform offers advanced pipeline features including merge trains to keep the main branch stable, parent-child pipelines for breaking complex workflows into manageable pieces, multi-project pipelines for cross-repository orchestration, and directed acyclic graph scheduling for optimal parallelization. GitLab CI integrates built-in security scanning for SAST, DAST, dependency analysis, and container scanning, with secret detection and validity checking. Recent releases have introduced fine-grained CI/CD job token permissions and AI-powered capabilities for code suggestions.
GitLab CI/CD serves development teams and organizations that prefer an all-in-one DevSecOps platform over a patchwork of separate tools. It is particularly popular with enterprises that need self-hosted CI/CD infrastructure, compliance controls, and built-in security scanning. The platform supports deployments to Kubernetes, serverless platforms, and traditional servers, with progressive delivery capabilities like canary deployments and feature flags for controlled rollouts.
