| [Creating and using CI/CD pipelines](pipelines.md) | Understand, visualize, create, and use CI/CD pipelines. |
| [CI/CD Variables](variables/README.md) | How environment variables can be configured and made available in pipelines. |
| [Where variables can be used](variables/where_variables_can_be_used.md) | A deeper look into where and how CI/CD variables can be used. |
| [User](../user/permissions.md#gitlab-cicd-permissions) and [job](../user/permissions.md#job-permissions) permissions | Learn about the access levels a user can have for performing certain CI actions. |
| [CI/CD Variables](variables/README.md) | Configuring and using environment variables in pipelines. |
| [Where variables can be used](variables/where_variables_can_be_used.md) | Where and how CI/CD variables can be used. |
| [User](../user/permissions.md#gitlab-cicd-permissions) and [job](../user/permissions.md#job-permissions) permissions | User access levels for performing certain CI actions. |
| [Job artifacts](../user/project/pipelines/job_artifacts.md) | Using the output of jobs. |
| [Cache dependencies in GitLab CI/CD](caching/index.md) | Speed up pipelines using caching. |
| [Using Git submodules with GitLab CI](git_submodules.md) | How to run your CI jobs when using Git submodules. |
| [Pipelines for merge requests](merge_request_pipelines/index.md) | Create pipelines specifically for merge requests. |
| [Using SSH keys with GitLab CI/CD](ssh_keys/README.md) | Use SSH keys in your build environment. |
| [Triggering pipelines through the API](triggers/README.md) | Use the GitLab API to trigger a pipeline. |
| [Pipeline schedules](../user/project/pipelines/schedules.md) | Trigger pipelines on a schedule. |
| [Connecting GitLab with a Kubernetes cluster](../user/project/clusters/index.md) | Integrate one or more Kubernetes clusters to your project. |
| [ChatOps](chatops/README.md) | Trigger CI jobs from chat, with results sent back to the channel. |
| [Interactive web terminals](interactive_web_terminal/index.md) | Open an interactive web terminal to debug the running jobs. |
| [Review Apps](review_apps/index.md) | Configure GitLab CI/CD to preview code changes in a per-branch basis. |
| [Optimizing GitLab for large repositories](large_repositories/index.md) | Useful tips on how to optimize GitLab and GitLab Runner for big repositories. |
| [Deploy Boards](https://docs.gitlab.com/ee/user/project/deploy_boards.html)**[PREMIUM]** | Check the current health and status of each CI/CD environment running on Kubernetes. |
| [GitLab CI/CD for external repositories](https://docs.gitlab.com/ee/ci/ci_cd_for_external_repos/index.html)**[PREMIUM]** | Get the benefits of GitLab CI/CD combined with repositories in GitHub and BitBucket Cloud. |
