Docs organize main page by product category

1 files changed, 115 insertions, 51 deletions

diff --git a/doc/README.md b/doc/README.md
index 05fa444657c..be805a2ccc4 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -11,35 +11,62 @@ GitLab offers the most scalable Git-based fully integrated platform for
 software development, with flexible products and subscriptions.
 To understand what features you have access to, check the [GitLab subscriptions](#gitlab-subscriptions) below.
 
-## Shortcuts to GitLab's most visited docs
+**Shortcuts to GitLab's most visited docs:**
 
-| [GitLab CI/CD](ci/README.md) | Other |
+| General documentation | GitLab CI/CD docs |
 | :----- | :----- |
-| [Quick start guide](ci/quick_start/README.md) | [API](api/README.md) |
-| [Configuring `.gitlab-ci.yml`](ci/yaml/README.md) | [SSH authentication](ssh/README.md) |
-| [Using Docker images](ci/docker/using_docker_images.md) | [GitLab Pages](user/project/pages/index.md) |
+| [User documentation](user/index.md) | [GitLab CI/CD](ci/README.md) |
+| [Administrator documentation](administration/index.md) | [GitLab CI/CD quick start guide](ci/quick_start/README.md) |
+| [Contributor documentation](#contributor-documentation) | [Configuring `.gitlab-ci.yml`](ci/yaml/README.md) |
+| [Getting started with GitLab](#getting-started-with-gitlab) | [Using Docker images](ci/docker/using_docker_images.md) |
+| [API](api/README.md) | [Auto DevOps](topics/autodevops/index.md) |
+| [SSH authentication](ssh/README.md) | [Kubernetes integration](user/project/clusters/index.md)|
+| [GitLab Pages](user/project/pages/index.md) | [GitLab Container Registry](user/project/container_registry.md) |
+
+## Complete DevOps with GitLab
+
+GitLab is the first single application for software development, security,
+and operations that enables Concurrent DevOps, making the software lifecycle
+three times faster and radically improving the speed of business. GitLab
+provides solutions for all the stages of the DevOps lifecycle:
+[plan](#plan), [create](#create), [verify](#verify), [package](#package),
+[release](#release), [configure](#configure), [monitor](#monitor).
+
+![DevOps Lifecycle](img/devops_lifecycle.png)
+
+### Plan
+
+Whether you use Waterfall, Agile, or Conversational Development,
+GitLab streamlines your collaborative workflows. Visualize, prioritize,
+coordinate, and track your progress your way with GitLab’s flexible project
+management tools.
+
+- Chat operations
+  - [Mattermost slash commands](user/project/integrations/mattermost_slash_commands.md)
+  - [Slack slash commands](user/project/integrations/slack_slash_commands.md)
+- [Discussions](user/discussions/index.md): Threads, comments, and resolvable discussions in issues, commits, and  merge requests.
+- [Issues](user/project/issues/index.md)
+- [Project Issue Board](user/project/issue_board.md)
+- [Issues and merge requests templates](user/project/description_templates.md): Create templates for submitting new issues and merge requests.
+- [Labels](user/project/labels.md): Categorize your issues or merge requests based on descriptive titles.
+- [Milestones](user/project/milestones/index.md): Organize issues and merge requests into a cohesive group, optionally setting a due date.
+- [Todos](workflow/todos.md): A chronological list of to-dos that are waiting for your input, all in a simple dashboard.
+- [GitLab Quick Actions](user/project/quick_actions.md): Textual shortcuts for common actions on issues or merge requests that are usually done by clicking buttons or dropdowns in GitLab's UI.
 
-- [User documentation](user/index.md)
-- [Administrator documentation](administration/index.md)
-- [Contributor documentation](#contributor-documentation)
+#### Migrate and import your projects from other platforms
 
-## Getting started with GitLab
+- [Importing to GitLab](user/project/import/index.md): Import your projects from GitHub, Bitbucket, GitLab.com, FogBugz and SVN into GitLab.
+- [Migrating from SVN](workflow/importing/migrating_from_svn.md): Convert a SVN repository to Git and GitLab.
 
-- [GitLab Basics](gitlab-basics/README.md): Start working on your command line and on GitLab.
-- [GitLab Workflow](workflow/README.md): Enhance your workflow with the best of GitLab Workflow.
-  - See also [GitLab Workflow - an overview](https://about.gitlab.com/2016/10/25/gitlab-workflow-an-overview/).
-- [GitLab Markdown](user/markdown.md): GitLab's advanced formatting system (GitLab Flavored Markdown).
-- [GitLab Quick Actions](user/project/quick_actions.md): Textual shortcuts for common actions on issues or merge requests that are usually done by clicking buttons or dropdowns in GitLab's UI.
-- [Auto DevOps](topics/autodevops/index.md)
+### Create
 
-### User account
+Consolidate source code into a single [DVCS](https://en.wikipedia.org/wiki/Distributed_version_control)
+that’s easily managed and controlled without disrupting your workflow.
+GitLab’s git repositories come complete with branching tools and access
+controls, providing a scalable, single source of truth for collaborating
+on projects and code.
 
-- [User account](user/profile/index.md): Manage your account
-  - [Authentication](topics/authentication/index.md): Account security with two-factor authentication, setup your ssh keys and deploy keys for secure access to your projects.
-  - [Profile settings](user/profile/index.md#profile-settings): Manage your profile settings, two factor authentication and more.
-- [User permissions](user/permissions.md): Learn what each role in a project (external/guest/reporter/developer/master/owner) can do.
-
-### Projects and groups
+#### Projects and groups
 
 - [Projects](user/project/index.md):
   - [Project settings](user/project/settings/index.md)
@@ -54,7 +81,7 @@ To understand what features you have access to, check the [GitLab subscriptions]
 - [Snippets](user/snippets.md): Snippets allow you to create little bits of code.
 - [Wikis](user/project/wiki/index.md): Enhance your repository documentation with built-in wikis.
 
-### Repository
+#### Repositories
 
 Manage your [repositories](user/project/repository/index.md) from the UI (user interface):
 
@@ -72,51 +99,88 @@ Manage your [repositories](user/project/repository/index.md) from the UI (user i
 - [Commits](user/project/repository/index.md#commits)
   - [Signing commits](user/project/repository/gpg_signed_commits/index.md): use GPG to sign your commits.
 
-### Issues and Merge Requests (MRs)
+#### Integrations
+
+- [Project Services](user/project/integrations/project_services.md): Integrate a project with external services, such as CI and chat.
+- [GitLab Integration](integration/README.md): Integrate with multiple third-party services with GitLab to allow external issue trackers and external authentication.
+- [Trello Power-Up](integration/trello_power_up.md): Integrate with GitLab's Trello Power-Up
+
+#### Automation
+
+- [API](api/README.md): Automate GitLab via a simple and powerful API.
+- [GitLab Webhooks](user/project/integrations/webhooks.md): Let GitLab notify you when new code has been pushed to your project.
+
+### Verify
+
+Spot errors sooner and shorten feedback cycles with built-in code review, code testing,
+Code Quality, and Review Apps. Customize your approval workflow controls, automatically
+test the quality of your code, and spin up a staging environment for every code change.
+GitLab Continuous Integration is the most popular next generation testing system that
+auto scales to run your tests faster.
 
-- [Discussions](user/discussions/index.md): Threads, comments, and resolvable discussions in issues, commits, and  merge requests.
-- [Issues](user/project/issues/index.md)
-- [Project issue Board](user/project/issue_board.md)
-- [Group Issue Board](user/project/issue_board.md#group-issue-board)
-- [Issues and merge requests templates](user/project/description_templates.md): Create templates for submitting new issues and merge requests.
-- [Labels](user/project/labels.md): Categorize your issues or merge requests based on descriptive titles.
 - [Merge Requests](user/project/merge_requests/index.md)
   - [Work In Progress Merge Requests](user/project/merge_requests/work_in_progress_merge_requests.md)
   - [Merge Request discussion resolution](user/discussions/index.md#moving-a-single-discussion-to-a-new-issue): Resolve discussions, move discussions in a merge request to an issue, only allow merge requests to be merged if all discussions are resolved.
   - [Checkout merge requests locally](user/project/merge_requests/index.md#checkout-merge-requests-locally)
   - [Cherry-pick](user/project/merge_requests/cherry_pick_changes.md)
-- [Milestones](user/project/milestones/index.md): Organize issues and merge requests into a cohesive group, optionally setting a due date.
-- [Todos](workflow/todos.md): A chronological list of to-dos that are waiting for your input, all in a simple dashboard.
+- [Review Apps](ci/review_apps/index.md): Preview changes to your app right from a merge request.
 
-### Git and GitLab
+### Package
 
-- [Git](topics/git/index.md): Getting started with Git, branching strategies, Git LFS, advanced use.
-- [Git cheatsheet](https://gitlab.com/gitlab-com/marketing/raw/master/design/print/git-cheatsheet/print-pdf/git-cheatsheet.pdf): Download a PDF describing the most used Git operations.
-- [GitLab Flow](workflow/gitlab_flow.md): explore the best of Git with the GitLab Flow strategy.
+GitLab Container Registry gives you the enhanced security and access controls of
+custom Docker images without 3rd party add-ons. Easily upload and download images
+from GitLab CI/CD with full Git repository management integration.
 
-### Migrate and import your projects from other platforms
+- [GitLab CI/CD](ci/README.md): Explore the features and capabilities of Continuous Integration, Continuous Delivery, and Continuous Deployment with GitLab.
+- [GitLab Container Registry](user/project/container_registry.md): Learn how to use GitLab's built-in Container Registry.
 
-- [Importing to GitLab](user/project/import/index.md): Import your projects from GitHub, Bitbucket, GitLab.com, FogBugz and SVN into GitLab.
-- [Migrating from SVN](workflow/importing/migrating_from_svn.md): Convert a SVN repository to Git and GitLab.
+### Release
+
+Spend less time configuring your tools, and more time creating. Whether you’re
+deploying to one server or thousands, build, test, and release your code
+confidently and securely with GitLab’s built-in Continuous Delivery and Deployment.
+
+- [GitLab Pages](user/project/pages/index.md): Build, test, and deploy a static site directly from GitLab.
+- [Auto Deploy](topics/autodevops/index.md#auto-deploy): Configure GitLab CI for the deployment of your application.
+- [Environments and deployments](ci/environments.md): With environments, you can control the continuous deployment of your software within GitLab.
 
-### Continuous Integration, Delivery, and Deployment
+### Configure
+
+Automate your entire workflow from build to deploy and monitoring with GitLab
+Auto Devops. Best practice templates get you started with minimal to zero
+configuration. Then customize everything from buildpacks to CI/CD.
+
+- [Auto DevOps](topics/autodevops/index.md)
+
+### Monitor
+
+Measure how long it takes to go from planning to monitoring and ensure your
+applications are always responsive and available. GitLab collects and displays
+performance metrics for deployed apps using Prometheus so you can know in an
+instant how code changes impact your production environment.
 
-- [GitLab CI](ci/README.md): Explore the features and capabilities of Continuous Integration, Continuous Delivery, and Continuous Deployment with GitLab.
-  - [Auto Deploy](ci/autodeploy/index.md): Configure GitLab CI for the deployment of your application.
-  - [Review Apps](ci/review_apps/index.md): Preview changes to your app right from a merge request.
 - [GitLab Cycle Analytics](user/project/cycle_analytics.md): Cycle Analytics measures the time it takes to go from an [idea to production](https://about.gitlab.com/2016/08/05/continuous-integration-delivery-and-deployment-with-gitlab/#from-idea-to-production-with-gitlab) for each project you have.
-- [GitLab Container Registry](user/project/container_registry.md): Learn how to use GitLab's built-in Container Registry.
+- [GitLab Performance Monitoring](administration/monitoring/performance/index.md)
 
-### Automation
+## Getting started with GitLab
 
-- [API](api/README.md): Automate GitLab via a simple and powerful API.
-- [GitLab Webhooks](user/project/integrations/webhooks.md): Let GitLab notify you when new code has been pushed to your project.
+- [GitLab Basics](gitlab-basics/README.md): Start working on your command line and on GitLab.
+- [GitLab Workflow](workflow/README.md): Enhance your workflow with the best of GitLab Workflow.
+  - See also [GitLab Workflow - an overview](https://about.gitlab.com/2016/10/25/gitlab-workflow-an-overview/).
+- [GitLab Markdown](user/markdown.md): GitLab's advanced formatting system (GitLab Flavored Markdown).
 
-### Integrations
+### User account
 
-- [Project Services](user/project/integrations/project_services.md): Integrate a project with external services, such as CI and chat.
-- [GitLab Integration](integration/README.md): Integrate with multiple third-party services with GitLab to allow external issue trackers and external authentication.
-- [Trello Power-Up](integration/trello_power_up.md): Integrate with GitLab's Trello Power-Up
+- [User account](user/profile/index.md): Manage your account
+  - [Authentication](topics/authentication/index.md): Account security with two-factor authentication, setup your ssh keys and deploy keys for secure access to your projects.
+  - [Profile settings](user/profile/index.md#profile-settings): Manage your profile settings, two factor authentication and more.
+- [User permissions](user/permissions.md): Learn what each role in a project (external/guest/reporter/developer/master/owner) can do.
+
+### Git and GitLab
+
+- [Git](topics/git/index.md): Getting started with Git, branching strategies, Git LFS, advanced use.
+- [Git cheatsheet](https://gitlab.com/gitlab-com/marketing/raw/master/design/print/git-cheatsheet/print-pdf/git-cheatsheet.pdf): Download a PDF describing the most used Git operations.
+- [GitLab Flow](workflow/gitlab_flow.md): explore the best of Git with the GitLab Flow strategy.
 
 ## Administrator documentation