diff --git a/1-CONTRIBUTION-GUIDE/README.md b/1-CONTRIBUTION-GUIDE/README.md
index 32ca907a3885..8ee47c197b8d 100644
--- a/1-CONTRIBUTION-GUIDE/README.md
+++ b/1-CONTRIBUTION-GUIDE/README.md
@@ -159,7 +159,28 @@ A valid metadata.json must adhere to the following structure
 
 ## Cloud Support
 
-If the sample does not support all clouds add the environments property to metadata.json indicating the clouds that are supported.
+If the sample does not support all clouds add the environments property to metadata.json indicating the clouds that are supported.  If omitted, the following is the default value of the environments property.
+
+```json
+{
+  ...
+  "environments": [
+    "AzureCloud",
+    "AzureUSGovernment"
+  ]
+}
+```
+
+### Cloud Specific Parameter Files
+
+If the sample needs separate parameter files for each cloud you can add each to the sample:
+
+| Cloud       | Parameter Filename |
+|:---------------------------------------- |:---------------------------------------- |
+| Azure Public Cloud  | azuredeploy.parameters.json |  
+| Azure US Government Cloud | azuredeploy.parameters.us.json |  
+
+If only one is provided it will be used for testing in all clouds.
 
 ## Azure DevOps CI
 
diff --git a/1-CONTRIBUTION-GUIDE/best-practices.md b/1-CONTRIBUTION-GUIDE/best-practices.md
index 776801424089..76a0e2f95ec9 100644
--- a/1-CONTRIBUTION-GUIDE/best-practices.md
+++ b/1-CONTRIBUTION-GUIDE/best-practices.md
@@ -32,7 +32,8 @@ An Azure Application or QuickStart sample must contain, at a minimum, the follow
 |:---------------------------------------- |:----------------------------------------------------- |:---------------------------------------- |
 | UI Definition File    | createUiDefinition.json | n/a |  
 | Template File | mainTemplate.json | azuredeploy.json |  
-| Parameters File | n/a | azuredeploy.parameters.json |  
+| Parameters File (Public) | n/a | azuredeploy.parameters.json  |  
+| Parameters File (US Gov) | n/a | azuredeploy.parameters.us.json |
 | Read Me File | Not required | README.md |  
 | [SECURITY.md file](https://help.github.com/en/articles/adding-a-security-policy-to-your-repository) | Not required | SECURITY.md |
 | QuickStart Description | n/a | metadata.json |