diff --git a/docs/content/en/docs-dev/contribution-guidelines/architectural-overview.md b/docs/content/en/docs-dev/contribution-guidelines/architectural-overview.md
index 0d83944b92..1d402ae900 100644
--- a/docs/content/en/docs-dev/contribution-guidelines/architectural-overview.md
+++ b/docs/content/en/docs-dev/contribution-guidelines/architectural-overview.md
@@ -24,6 +24,7 @@ authentication, showing deployment list/details, application list/details, deliv
 
 Control Plane contains the following components:
 - `server`: a service to provide api for piped, web and serve static assets for web.
+- `ops`: a service to provide administrative features for Control Plane owner like adding/managing projects.
 - `cache`: a redis cache service for caching internal data.
 - `datastore`: data storage for storing deployment, application data
   - this can be a fully-managed service such as `Firestore`, `Cloud SQL`...
@@ -31,3 +32,5 @@ Control Plane contains the following components:
 - `filestore`: file storage for storing logs, application states
   - this can a fully-managed service such as `GCS`, `S3`...
   - or a self-managed service such as `Minio`
+
+For more information, see [Architecture overview of Control Plane](../operator-manual/control-plane/architecture-overview.md).
diff --git a/docs/content/en/docs-dev/contribution-guidelines/development.md b/docs/content/en/docs-dev/contribution-guidelines/development.md
index 4636198ac1..6e56af4ffe 100644
--- a/docs/content/en/docs-dev/contribution-guidelines/development.md
+++ b/docs/content/en/docs-dev/contribution-guidelines/development.md
@@ -25,6 +25,7 @@ description: >
 - `make test/web`: runs all unit tests of web.
 - `make test/integration`: runs integration tests.
 
+- `make run/piped`: runs Piped locally (for more information, see [here](#how-to-run-piped-agent-locally)).
 - `make run/site`: runs PipeCD site locally (requires [hugo](https://github.com/gohugoio/hugo) with `_extended` version `0.92.1` or later to be installed).
 
 - `make gen/code`: generate Go and Typescript code from protos and mock configs. You need to run it if you modified any proto or mock definition files.
@@ -63,7 +64,7 @@ For the full list of available commands, please see the Makefile at the root of
 
 2. Ensure that your `kube-context` is connecting to the right kubernetes cluster
 
-3. Run the following command to start running `piped`
+3. Run the following command to start running `piped` (if you want to connect Piped to a locally running Control Plane, add `INSECURE=true` option)
 
     ``` console
     make run/piped CONFIG_FILE=piped-config.yaml