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description: "Learn how to use GitLab CI/CD, the GitLab built-in Continuous Integration, Continuous Deployment, and Continuous Delivery toolset to build, test, and deploy your application."
Video demonstration of continuous integration with GitLab CI/CD: <ahref="https://www.youtube.com/watch?v=ljth1Q5oJoo">Continuous Integration with GitLab (overview demo)</a>.
| [Schedule pipelines](pipelines/schedules.md) | Schedule pipelines to run as often as you need. |
| [Custom path for `.gitlab-ci.yml`](pipelines/settings.md#specify-a-custom-cicd-configuration-file) | Define a custom path for the CI/CD configuration file. |
| [Git submodules for CI/CD](git_submodules.md) | Configure jobs for using Git submodules. |
| [SSH keys for CI/CD](ssh_keys/index.md) | Using SSH keys in your CI pipelines. |
| [Pipeline triggers](triggers/index.md) | Trigger pipelines through the API. |
| [Merge request pipelines](pipelines/merge_request_pipelines.md) | Design a pipeline structure for running a pipeline in merge requests. |
| [Integrate with Kubernetes clusters](../user/infrastructure/clusters/index.md) | Connect your project to Google Kubernetes Engine (GKE) or an existing Kubernetes cluster. |
| [Optimize GitLab and GitLab Runner for large repositories](large_repositories/index.md) | Recommended strategies for handling large repositories. |
| [`.gitlab-ci.yml` full reference](yaml/index.md) | All the attributes you can use with GitLab CI/CD. |
| [Auto DevOps](../topics/autodevops/index.md) | Set up your app's entire lifecycle. |
| [ChatOps](chatops/index.md) | Trigger CI jobs from chat, with results sent back to the channel. |
| [Connect to cloud services](cloud_services/index.md) | Connect to cloud providers using OpenID Connect (OIDC) to retrieve temporary credentials to access services or secrets. |
| **Verify** | |
| [Browser Performance Testing](../user/project/merge_requests/browser_performance_testing.md) | Quickly determine the browser performance impact of pending code changes. |
| [Load Performance Testing](../user/project/merge_requests/load_performance_testing.md) | Quickly determine the server performance impact of pending code changes. |
| [CI services](services/index.md) | Link Docker containers with your base image. |
| [GitLab CI/CD for external repositories](ci_cd_for_external_repos/index.md) | Get the benefits of GitLab CI/CD combined with repositories in GitHub and Bitbucket Cloud. |
| [Interactive Web Terminals](interactive_web_terminal/index.md) | Open an interactive web terminal to debug the running jobs. |
| [Canary Deployments](../user/project/canary_deployments.md) | Ship features to only a portion of your pods and let a percentage of your user base to visit the temporarily deployed feature. |
| [Deploy boards](../user/project/deploy_boards.md) | Check the current health and status of each CI/CD environment running on Kubernetes. |
| [Feature Flags](../operations/feature_flags.md) | Deploy your features behind Feature Flags. |
- If you use VS Code to edit your GitLab CI/CD configuration, the
[GitLab Workflow VS Code extension](../user/project/repository/vscode.md) helps you
[validate your configuration](https://marketplace.visualstudio.com/items?itemName=GitLab.gitlab-workflow#validate-gitlab-ci-configuration)
and [view your pipeline status](https://marketplace.visualstudio.com/items?itemName=GitLab.gitlab-workflow#information-about-your-branch-pipelines-mr-closing-issue).
