diff --git a/README.md b/README.md
new file mode 100644
index 00000000..176dfc6a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,28 @@
+# autoware
+
+This is one of the prototype repositories for Autoware Core/Universe that AWF agreed to create in the [TSC meeting on 2021/11/17](https://discourse.ros.org/t/technical-steering-committee-tsc-meeting-36-2021-11-17-minutes/23168).
+Tier IV and AWF members are working in `tier4/proposal` branch for showing the possibility of moving from GitLab to GitHub.
+
+This is the list of the prototype repositories and their roles.
+
+- [autowarefoundation/autoware](https://github.com/autowarefoundation/autoware)
+  - This is a meta-repository that contains `.repos` files to construct a workspace.
+  - Since it's prospected to be forked by users, we don't put a lot of information here to avoid unnecessary differences.
+- [autowarefoundation/autoware_common](https://github.com/autowarefoundation/autoware_common)
+  - This is a repository that contains ROS packages referenced in common by many repositories like libraries and utilities.
+  - In order to reduce the CI execution time, splitting that kind of packages from a big repository is a good practice.
+- [autowarefoundation/autoware.core](https://github.com/autowarefoundation/autoware.core)
+  - This is a core repository that contains high-quality and stable ROS packages for Autonomous Driving.
+  - Although it's almost empty at this time, it will be implemented based on [Autoware.Auto](https://gitlab.com/autowarefoundation/autoware.auto/AutowareAuto) and [Autoware.Universe](https://github.com/autowarefoundation/autoware.universe) during the next ODD project.
+- [autowarefoundation/autoware.universe](https://github.com/autowarefoundation/autoware.universe)
+  - This is a core repository that contains experimental but cutting-edge ROS packages for Autonomous Driving.
+- [autowarefoundation/autoware_launch](https://github.com/autowarefoundation/autoware_launch)
+  - This is a launch configuration repository that contains node configurations and their parameters.
+- [autowarefoundation/autoware-github-actions](https://github.com/autowarefoundation/autoware-github-actions)
+  - This is a repository for CI that contains [reusable workflows of GitHub Actions](https://docs.github.com/ja/actions/learn-github-actions/reusing-workflows).
+  - Since Autoware has a lot of repositories in total, making CI scripts DRY is efficient.
+- [autowarefoundation/autoware-documentation](https://github.com/autowarefoundation/autoware-documentation)
+  - This is a documentation repository for Autoware users and developers.
+  - Since Autoware Core/Unverse has multiple repositories, preparing a central documentation repository is more user-friendly than writing distributed documentation in each repository.
+
+If you have any questions or ideas, please feel free to start a discussion on [GitHub Discussions in autowarefoundation/autoware](https://github.com/autowarefoundation/autoware/discussions).