diff --git a/Commands/change-analysis/_list-by-resource.md b/Commands/change-analysis/_list-by-resource.md
new file mode 100644
index 00000000000..55ccbc5fb0b
--- /dev/null
+++ b/Commands/change-analysis/_list-by-resource.md
@@ -0,0 +1,16 @@
+# [Command] _change-analysis list-by-resource_
+
+List the changes of a resource within the specified time range. Customer data will be masked if the user doesn't have access.
+
+## Versions
+
+### [2021-04-01](/Resources/mgmt-plane/L3tyZXNvdXJjZWlkfS9wcm92aWRlcnMvbWljcm9zb2Z0LmNoYW5nZWFuYWx5c2lzL3Jlc291cmNlY2hhbmdlcw==/2021-04-01.xml) **Preview**
+
+<!-- mgmt-plane /{resourceid}/providers/microsoft.changeanalysis/resourcechanges 2021-04-01 -->
+
+#### examples
+
+- List the changes of a resource within the specified time range
+    ```bash
+        change-analysis list-by-resource -r [ResourceId] --start-time '05/24/2022 8:43:36' --end-time '05/25/2022 9:46:36'
+    ```
diff --git a/Commands/change-analysis/_list.md b/Commands/change-analysis/_list.md
new file mode 100644
index 00000000000..965d35b27de
--- /dev/null
+++ b/Commands/change-analysis/_list.md
@@ -0,0 +1,22 @@
+# [Command] _change-analysis list_
+
+List the changes of resources in the subscription within the specified time range. Customer data will always be masked.
+
+## Versions
+
+### [2021-04-01](/Resources/mgmt-plane/L3N1YnNjcmlwdGlvbnMve30vcHJvdmlkZXJzL21pY3Jvc29mdC5jaGFuZ2VhbmFseXNpcy9jaGFuZ2Vz/2021-04-01.xml) **Preview**
+
+<!-- mgmt-plane /subscriptions/{}/providers/microsoft.changeanalysis/changes 2021-04-01 -->
+<!-- mgmt-plane /subscriptions/{}/resourcegroups/{}/providers/microsoft.changeanalysis/changes 2021-04-01 -->
+
+#### examples
+
+- List the changes of a subscription within the specific time range
+    ```bash
+        change-analysis list --start-time '05/24/2022 8:43:36' --end-time '05/25/2022 9:46:36'
+    ```
+
+- List the changes of a resource group within the specific time range
+    ```bash
+        change-analysis list -g [ResourceGroup] --start-time '05/24/2022 8:43:36' --end-time '05/25/2022 9:46:36'
+    ```
diff --git a/Commands/change-analysis/readme.md b/Commands/change-analysis/readme.md
new file mode 100644
index 00000000000..dcf981d6647
--- /dev/null
+++ b/Commands/change-analysis/readme.md
@@ -0,0 +1,11 @@
+# [Group] _change-analysis_
+
+List changes for resources
+
+## Commands
+
+- [list](/Commands/change-analysis/_list.md)
+: List the changes of resources in the subscription within the specified time range. Customer data will always be masked.
+
+- [list-by-resource](/Commands/change-analysis/_list-by-resource.md)
+: List the changes of a resource within the specified time range. Customer data will be masked if the user doesn't have access.
diff --git a/Commands/readme.md b/Commands/readme.md
new file mode 100644
index 00000000000..c2635e48537
--- /dev/null
+++ b/Commands/readme.md
@@ -0,0 +1,6 @@
+# Atomic Azure CLI Commands
+
+## Groups
+
+- [change-analysis](/Commands/change-analysis/readme.md)
+: List changes for resources
diff --git a/Commands/tree.json b/Commands/tree.json
new file mode 100644
index 00000000000..c7a7363bb9b
--- /dev/null
+++ b/Commands/tree.json
@@ -0,0 +1,90 @@
+{
+  "root": {
+    "commandGroups": {
+      "change-analysis": {
+        "commands": {
+          "list": {
+            "help": {
+              "short": "List the changes of resources in the subscription within the specified time range. Customer data will always be masked."
+            },
+            "names": [
+              "change-analysis",
+              "list"
+            ],
+            "versions": [
+              {
+                "examples": [
+                  {
+                    "commands": [
+                      "change-analysis list --start-time '05/24/2022 8:43:36' --end-time '05/25/2022 9:46:36'"
+                    ],
+                    "name": "List the changes of a subscription within the specific time range"
+                  },
+                  {
+                    "commands": [
+                      "change-analysis list -g [ResourceGroup] --start-time '05/24/2022 8:43:36' --end-time '05/25/2022 9:46:36'"
+                    ],
+                    "name": "List the changes of a resource group within the specific time range"
+                  }
+                ],
+                "name": "2021-04-01",
+                "resources": [
+                  {
+                    "id": "/subscriptions/{}/providers/microsoft.changeanalysis/changes",
+                    "plane": "mgmt-plane",
+                    "version": "2021-04-01"
+                  },
+                  {
+                    "id": "/subscriptions/{}/resourcegroups/{}/providers/microsoft.changeanalysis/changes",
+                    "plane": "mgmt-plane",
+                    "version": "2021-04-01"
+                  }
+                ],
+                "stage": "Preview"
+              }
+            ]
+          },
+          "list-by-resource": {
+            "help": {
+              "short": "List the changes of a resource within the specified time range. Customer data will be masked if the user doesn't have access."
+            },
+            "names": [
+              "change-analysis",
+              "list-by-resource"
+            ],
+            "versions": [
+              {
+                "examples": [
+                  {
+                    "commands": [
+                      "change-analysis list-by-resource -r [ResourceId] --start-time '05/24/2022 8:43:36' --end-time '05/25/2022 9:46:36'"
+                    ],
+                    "name": "List the changes of a resource within the specified time range"
+                  }
+                ],
+                "name": "2021-04-01",
+                "resources": [
+                  {
+                    "id": "/{resourceid}/providers/microsoft.changeanalysis/resourcechanges",
+                    "plane": "mgmt-plane",
+                    "version": "2021-04-01"
+                  }
+                ],
+                "stage": "Preview"
+              }
+            ]
+          }
+        },
+        "help": {
+          "short": "List changes for resources"
+        },
+        "names": [
+          "change-analysis"
+        ]
+      }
+    },
+    "names": [
+      "aaz"
+    ]
+  }
+}
\ No newline at end of file
diff --git a/Resources/mgmt-plane/L3N1YnNjcmlwdGlvbnMve30vcHJvdmlkZXJzL21pY3Jvc29mdC5jaGFuZ2VhbmFseXNpcy9jaGFuZ2Vz/2021-04-01.xml b/Resources/mgmt-plane/L3N1YnNjcmlwdGlvbnMve30vcHJvdmlkZXJzL21pY3Jvc29mdC5jaGFuZ2VhbmFseXNpcy9jaGFuZ2Vz/2021-04-01.xml
new file mode 100644
index 00000000000..1e4e9027fb6
--- /dev/null
+++ b/Resources/mgmt-plane/L3N1YnNjcmlwdGlvbnMve30vcHJvdmlkZXJzL21pY3Jvc29mdC5jaGFuZ2VhbmFseXNpcy9jaGFuZ2Vz/2021-04-01.xml
@@ -0,0 +1,220 @@
+<?xml version='1.0' encoding='utf-8'?>
+<CodeGen plane="mgmt-plane">
+  <resource id="/subscriptions/{}/providers/microsoft.changeanalysis/changes" version="2021-04-01" swagger="mgmt-plane/changeanalysis/ResourceProviders/Microsoft.ChangeAnalysis/Paths/L3N1YnNjcmlwdGlvbnMve3N1YnNjcmlwdGlvbklkfS9wcm92aWRlcnMvTWljcm9zb2Z0LkNoYW5nZUFuYWx5c2lzL2NoYW5nZXM=/V/MjAyMS0wNC0wMQ=="/>
+  <resource id="/subscriptions/{}/resourcegroups/{}/providers/microsoft.changeanalysis/changes" version="2021-04-01" swagger="mgmt-plane/changeanalysis/ResourceProviders/Microsoft.ChangeAnalysis/Paths/L3N1YnNjcmlwdGlvbnMve3N1YnNjcmlwdGlvbklkfS9yZXNvdXJjZUdyb3Vwcy97cmVzb3VyY2VHcm91cE5hbWV9L3Byb3ZpZGVycy9NaWNyb3NvZnQuQ2hhbmdlQW5hbHlzaXMvY2hhbmdlcw==/V/MjAyMS0wNC0wMQ=="/>
+  <commandGroup name="change-analysis">
+    <command name="list" version="2021-04-01">
+      <resource id="/subscriptions/{}/providers/microsoft.changeanalysis/changes" version="2021-04-01" swagger="mgmt-plane/changeanalysis/ResourceProviders/Microsoft.ChangeAnalysis/Paths/L3N1YnNjcmlwdGlvbnMve3N1YnNjcmlwdGlvbklkfS9wcm92aWRlcnMvTWljcm9zb2Z0LkNoYW5nZUFuYWx5c2lzL2NoYW5nZXM=/V/MjAyMS0wNC0wMQ=="/>
+      <resource id="/subscriptions/{}/resourcegroups/{}/providers/microsoft.changeanalysis/changes" version="2021-04-01" swagger="mgmt-plane/changeanalysis/ResourceProviders/Microsoft.ChangeAnalysis/Paths/L3N1YnNjcmlwdGlvbnMve3N1YnNjcmlwdGlvbklkfS9yZXNvdXJjZUdyb3Vwcy97cmVzb3VyY2VHcm91cE5hbWV9L3Byb3ZpZGVycy9NaWNyb3NvZnQuQ2hhbmdlQW5hbHlzaXMvY2hhbmdlcw==/V/MjAyMS0wNC0wMQ=="/>
+      <argGroup name="">
+        <arg type="ResourceGroupName" var="$Path.resourceGroupName" options="resource-group g"/>
+        <arg type="SubscriptionId" var="$Path.subscriptionId" options="subscription" required="True"/>
+        <arg type="dateTime" var="$Query.endTime" options="end-time" required="True">
+          <help short="Specifies the end time of the changes request."/>
+        </arg>
+        <arg type="string" var="$Query.skipToken" options="skip-token">
+          <help short="A skip token is used to continue retrieving items after an operation returns a partial result. If a previous response contains a nextLink element, the value of the nextLink element will include a skipToken parameter that specifies a starting point to use for subsequent calls."/>
+        </arg>
+        <arg type="dateTime" var="$Query.startTime" options="start-time" required="True">
+          <help short="Specifies the start time of the changes request."/>
+        </arg>
+      </argGroup>
+      <condition var="$Condition_Changes_ListChangesByResourceGroup">
+        <operator type="and">
+          <operator type="hasValue" arg="$Path.resourceGroupName"/>
+          <operator type="hasValue" arg="$Path.subscriptionId"/>
+          <operator type="hasValue" arg="$Query.endTime"/>
+          <operator type="hasValue" arg="$Query.startTime"/>
+        </operator>
+      </condition>
+      <condition var="$Condition_Changes_ListChangesBySubscription">
+        <operator type="and">
+          <operator type="hasValue" arg="$Path.subscriptionId"/>
+          <operator type="hasValue" arg="$Query.endTime"/>
+          <operator type="hasValue" arg="$Query.startTime"/>
+          <operator type="not">
+            <operator type="hasValue" arg="$Path.resourceGroupName"/>
+          </operator>
+        </operator>
+      </condition>
+      <operation when="$Condition_Changes_ListChangesByResourceGroup" operationId="Changes_ListChangesByResourceGroup">
+        <http path="/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ChangeAnalysis/changes">
+          <request method="get">
+            <path>
+              <param type="string" name="resourceGroupName" arg="$Path.resourceGroupName" required="True">
+                <format maxLength="90" minLength="1"/>
+              </param>
+              <param type="string" name="subscriptionId" arg="$Path.subscriptionId" required="True">
+                <format minLength="1"/>
+              </param>
+            </path>
+            <query>
+              <param type="dateTime" name="$endTime" arg="$Query.endTime" required="True"/>
+              <param type="string" name="$skipToken" arg="$Query.skipToken"/>
+              <param type="dateTime" name="$startTime" arg="$Query.startTime" required="True"/>
+              <const readOnly="True" const="True" type="string" name="api-version" required="True">
+                <default value="2021-04-01"/>
+                <format minLength="1"/>
+              </const>
+            </query>
+          </request>
+          <response statusCode="200">
+            <body>
+              <json var="$Instance">
+                <schema type="object">
+                  <prop type="string" name="nextLink"/>
+                  <prop type="array<object>" name="value">
+                    <item type="object">
+                      <prop readOnly="True" type="string" name="id"/>
+                      <prop readOnly="True" type="string" name="name"/>
+                      <prop type="object" name="properties">
+                        <prop type="string" name="changeType">
+                          <enum>
+                            <item value="Add"/>
+                            <item value="Remove"/>
+                            <item value="Update"/>
+                          </enum>
+                        </prop>
+                        <prop type="array<string>" name="initiatedByList">
+                          <item type="string"/>
+                        </prop>
+                        <prop type="array<object>" name="propertyChanges">
+                          <item type="object">
+                            <prop type="string" name="changeCategory">
+                              <enum>
+                                <item value="System"/>
+                                <item value="User"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="changeType">
+                              <enum>
+                                <item value="Add"/>
+                                <item value="Remove"/>
+                                <item value="Update"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="description"/>
+                            <prop type="string" name="displayName"/>
+                            <prop type="boolean" name="isDataMasked"/>
+                            <prop type="string" name="jsonPath"/>
+                            <prop type="string" name="level">
+                              <enum>
+                                <item value="Important"/>
+                                <item value="Noisy"/>
+                                <item value="Normal"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="newValue"/>
+                            <prop type="string" name="oldValue"/>
+                          </item>
+                        </prop>
+                        <prop type="string" name="resourceId"/>
+                        <prop type="dateTime" name="timeStamp"/>
+                      </prop>
+                      <prop readOnly="True" type="string" name="type"/>
+                    </item>
+                  </prop>
+                </schema>
+              </json>
+            </body>
+          </response>
+          <response isError="True">
+            <body>
+              <json>
+                <schema type="@MgmtErrorFormat"/>
+              </json>
+            </body>
+          </response>
+        </http>
+      </operation>
+      <operation when="$Condition_Changes_ListChangesBySubscription" operationId="Changes_ListChangesBySubscription">
+        <http path="/subscriptions/{subscriptionId}/providers/Microsoft.ChangeAnalysis/changes">
+          <request method="get">
+            <path>
+              <param type="string" name="subscriptionId" arg="$Path.subscriptionId" required="True">
+                <format minLength="1"/>
+              </param>
+            </path>
+            <query>
+              <param type="dateTime" name="$endTime" arg="$Query.endTime" required="True"/>
+              <param type="string" name="$skipToken" arg="$Query.skipToken"/>
+              <param type="dateTime" name="$startTime" arg="$Query.startTime" required="True"/>
+              <const readOnly="True" const="True" type="string" name="api-version" required="True">
+                <default value="2021-04-01"/>
+                <format minLength="1"/>
+              </const>
+            </query>
+          </request>
+          <response statusCode="200">
+            <body>
+              <json var="$Instance">
+                <schema type="object">
+                  <prop type="string" name="nextLink"/>
+                  <prop type="array<object>" name="value">
+                    <item type="object">
+                      <prop readOnly="True" type="string" name="id"/>
+                      <prop readOnly="True" type="string" name="name"/>
+                      <prop type="object" name="properties">
+                        <prop type="string" name="changeType">
+                          <enum>
+                            <item value="Add"/>
+                            <item value="Remove"/>
+                            <item value="Update"/>
+                          </enum>
+                        </prop>
+                        <prop type="array<string>" name="initiatedByList">
+                          <item type="string"/>
+                        </prop>
+                        <prop type="array<object>" name="propertyChanges">
+                          <item type="object">
+                            <prop type="string" name="changeCategory">
+                              <enum>
+                                <item value="System"/>
+                                <item value="User"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="changeType">
+                              <enum>
+                                <item value="Add"/>
+                                <item value="Remove"/>
+                                <item value="Update"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="description"/>
+                            <prop type="string" name="displayName"/>
+                            <prop type="boolean" name="isDataMasked"/>
+                            <prop type="string" name="jsonPath"/>
+                            <prop type="string" name="level">
+                              <enum>
+                                <item value="Important"/>
+                                <item value="Noisy"/>
+                                <item value="Normal"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="newValue"/>
+                            <prop type="string" name="oldValue"/>
+                          </item>
+                        </prop>
+                        <prop type="string" name="resourceId"/>
+                        <prop type="dateTime" name="timeStamp"/>
+                      </prop>
+                      <prop readOnly="True" type="string" name="type"/>
+                    </item>
+                  </prop>
+                </schema>
+              </json>
+            </body>
+          </response>
+          <response isError="True">
+            <body>
+              <json>
+                <schema type="@MgmtErrorFormat"/>
+              </json>
+            </body>
+          </response>
+        </http>
+      </operation>
+      <output type="array" ref="$Instance.value" clientFlatten="True" nextLink="$Instance.nextLink"/>
+    </command>
+  </commandGroup>
+</CodeGen>
diff --git a/Resources/mgmt-plane/L3N1YnNjcmlwdGlvbnMve30vcmVzb3VyY2Vncm91cHMve30vcHJvdmlkZXJzL21pY3Jvc29mdC5jaGFuZ2VhbmFseXNpcy9jaGFuZ2Vz/2021-04-01.md b/Resources/mgmt-plane/L3N1YnNjcmlwdGlvbnMve30vcmVzb3VyY2Vncm91cHMve30vcHJvdmlkZXJzL21pY3Jvc29mdC5jaGFuZ2VhbmFseXNpcy9jaGFuZ2Vz/2021-04-01.md
new file mode 100644
index 00000000000..c8de6c6fee9
--- /dev/null
+++ b/Resources/mgmt-plane/L3N1YnNjcmlwdGlvbnMve30vcmVzb3VyY2Vncm91cHMve30vcHJvdmlkZXJzL21pY3Jvc29mdC5jaGFuZ2VhbmFseXNpcy9jaGFuZ2Vz/2021-04-01.md
@@ -0,0 +1 @@
+Reference [/subscriptions/{}/providers/microsoft.changeanalysis/changes 2021-04-01](/Resources/mgmt-plane/L3N1YnNjcmlwdGlvbnMve30vcHJvdmlkZXJzL21pY3Jvc29mdC5jaGFuZ2VhbmFseXNpcy9jaGFuZ2Vz/2021-04-01.xml)
diff --git a/Resources/mgmt-plane/L3tyZXNvdXJjZWlkfS9wcm92aWRlcnMvbWljcm9zb2Z0LmNoYW5nZWFuYWx5c2lzL3Jlc291cmNlY2hhbmdlcw==/2021-04-01.xml b/Resources/mgmt-plane/L3tyZXNvdXJjZWlkfS9wcm92aWRlcnMvbWljcm9zb2Z0LmNoYW5nZWFuYWx5c2lzL3Jlc291cmNlY2hhbmdlcw==/2021-04-01.xml
new file mode 100644
index 00000000000..d881821becb
--- /dev/null
+++ b/Resources/mgmt-plane/L3tyZXNvdXJjZWlkfS9wcm92aWRlcnMvbWljcm9zb2Z0LmNoYW5nZWFuYWx5c2lzL3Jlc291cmNlY2hhbmdlcw==/2021-04-01.xml
@@ -0,0 +1,109 @@
+<?xml version='1.0' encoding='utf-8'?>
+<CodeGen plane="mgmt-plane">
+  <resource id="/{resourceid}/providers/microsoft.changeanalysis/resourcechanges" version="2021-04-01" swagger="mgmt-plane/changeanalysis/ResourceProviders/Microsoft.ChangeAnalysis/Paths/L3tyZXNvdXJjZUlkfS9wcm92aWRlcnMvTWljcm9zb2Z0LkNoYW5nZUFuYWx5c2lzL3Jlc291cmNlQ2hhbmdlcw==/V/MjAyMS0wNC0wMQ=="/>
+  <commandGroup name="change-analysis">
+    <command name="list-by-resource" version="2021-04-01">
+      <resource id="/{resourceid}/providers/microsoft.changeanalysis/resourcechanges" version="2021-04-01" swagger="mgmt-plane/changeanalysis/ResourceProviders/Microsoft.ChangeAnalysis/Paths/L3tyZXNvdXJjZUlkfS9wcm92aWRlcnMvTWljcm9zb2Z0LkNoYW5nZUFuYWx5c2lzL3Jlc291cmNlQ2hhbmdlcw==/V/MjAyMS0wNC0wMQ=="/>
+      <argGroup name="">
+        <arg type="string" var="$Path.resourceId" options="resource r" required="True">
+          <help short="The identifier of the resource."/>
+        </arg>
+        <arg type="dateTime" var="$Query.endTime" options="end-time" required="True">
+          <help short="Specifies the end time of the changes request."/>
+        </arg>
+        <arg type="string" var="$Query.skipToken" options="skip-token">
+          <help short="A skip token is used to continue retrieving items after an operation returns a partial result. If a previous response contains a nextLink element, the value of the nextLink element will include a skipToken parameter that specifies a starting point to use for subsequent calls."/>
+        </arg>
+        <arg type="dateTime" var="$Query.startTime" options="start-time" required="True">
+          <help short="Specifies the start time of the changes request."/>
+        </arg>
+      </argGroup>
+      <operation operationId="ResourceChanges_List">
+        <http path="/{resourceId}/providers/Microsoft.ChangeAnalysis/resourceChanges">
+          <request method="post">
+            <path>
+              <param type="string" name="resourceId" arg="$Path.resourceId" required="True"/>
+            </path>
+            <query>
+              <param type="dateTime" name="$endTime" arg="$Query.endTime" required="True"/>
+              <param type="string" name="$skipToken" arg="$Query.skipToken"/>
+              <param type="dateTime" name="$startTime" arg="$Query.startTime" required="True"/>
+              <const readOnly="True" const="True" type="string" name="api-version" required="True">
+                <default value="2021-04-01"/>
+                <format minLength="1"/>
+              </const>
+            </query>
+          </request>
+          <response statusCode="200">
+            <body>
+              <json var="$Instance">
+                <schema type="object">
+                  <prop type="string" name="nextLink"/>
+                  <prop type="array<object>" name="value">
+                    <item type="object">
+                      <prop readOnly="True" type="string" name="id"/>
+                      <prop readOnly="True" type="string" name="name"/>
+                      <prop type="object" name="properties">
+                        <prop type="string" name="changeType">
+                          <enum>
+                            <item value="Add"/>
+                            <item value="Remove"/>
+                            <item value="Update"/>
+                          </enum>
+                        </prop>
+                        <prop type="array<string>" name="initiatedByList">
+                          <item type="string"/>
+                        </prop>
+                        <prop type="array<object>" name="propertyChanges">
+                          <item type="object">
+                            <prop type="string" name="changeCategory">
+                              <enum>
+                                <item value="System"/>
+                                <item value="User"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="changeType">
+                              <enum>
+                                <item value="Add"/>
+                                <item value="Remove"/>
+                                <item value="Update"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="description"/>
+                            <prop type="string" name="displayName"/>
+                            <prop type="boolean" name="isDataMasked"/>
+                            <prop type="string" name="jsonPath"/>
+                            <prop type="string" name="level">
+                              <enum>
+                                <item value="Important"/>
+                                <item value="Noisy"/>
+                                <item value="Normal"/>
+                              </enum>
+                            </prop>
+                            <prop type="string" name="newValue"/>
+                            <prop type="string" name="oldValue"/>
+                          </item>
+                        </prop>
+                        <prop type="string" name="resourceId"/>
+                        <prop type="dateTime" name="timeStamp"/>
+                      </prop>
+                      <prop readOnly="True" type="string" name="type"/>
+                    </item>
+                  </prop>
+                </schema>
+              </json>
+            </body>
+          </response>
+          <response isError="True">
+            <body>
+              <json>
+                <schema type="@MgmtErrorFormat"/>
+              </json>
+            </body>
+          </response>
+        </http>
+      </operation>
+      <output type="array" ref="$Instance.value" clientFlatten="True" nextLink="$Instance.nextLink"/>
+    </command>
+  </commandGroup>
+</CodeGen>