diff --git a/src/azure-cli-core/azure/cli/core/util.py b/src/azure-cli-core/azure/cli/core/util.py
index ae0c55d5ccf..9799fc59686 100644
--- a/src/azure-cli-core/azure/cli/core/util.py
+++ b/src/azure-cli-core/azure/cli/core/util.py
@@ -204,6 +204,19 @@ def _get_version_string(name, version_dict):
     return version_string, updates_available
 
 
+def get_az_version_json():
+    from azure.cli.core.extension import get_extensions
+    versions = {'extensions': {}}
+
+    for dist in get_installed_cli_distributions():
+        versions[dist.key] = dist.version
+    extensions = get_extensions()
+    if extensions:
+        for ext in extensions:
+            versions['extensions'][ext.name] = ext.version or 'Unknown'
+    return versions
+
+
 def get_json_object(json_string):
     """ Loads a JSON string as an object and converts all keys to snake case """
 
diff --git a/src/azure-cli/HISTORY.rst b/src/azure-cli/HISTORY.rst
index 9579a9a5f9e..a474895e03b 100644
--- a/src/azure-cli/HISTORY.rst
+++ b/src/azure-cli/HISTORY.rst
@@ -31,6 +31,10 @@ Release History
 * Fix `vm create` failure in Azure Stack profile.
 * vm monitor metrics tail/list-definitions: support query metric and list definitions for a vm.
 
+**Misc.**
+
+* Add preview command `az version show` to show the versions of Azure CLI modules and extensions in JSON format by default or format configured by --output
+
 **Storage**
 
 * `az storage account create`: Remove preview flag for --enable-hierarchical-namespace parameter
diff --git a/src/azure-cli/azure/cli/command_modules/resource/_help.py b/src/azure-cli/azure/cli/command_modules/resource/_help.py
index 1f9be32d2b4..a3aea38f6f6 100644
--- a/src/azure-cli/azure/cli/command_modules/resource/_help.py
+++ b/src/azure-cli/azure/cli/command_modules/resource/_help.py
@@ -1307,3 +1307,8 @@
 type: group
 short-summary: Manage resource tags.
 """
+
+helps['version'] = """
+type: command
+short-summary: Show the versions of Azure CLI modules and extensions in JSON format by default or format configured by --output
+"""
diff --git a/src/azure-cli/azure/cli/command_modules/resource/commands.py b/src/azure-cli/azure/cli/command_modules/resource/commands.py
index 7df4df4693b..5d68342799a 100644
--- a/src/azure-cli/azure/cli/command_modules/resource/commands.py
+++ b/src/azure-cli/azure/cli/command_modules/resource/commands.py
@@ -318,3 +318,6 @@ def load_command_table(self, _):
 
     with self.command_group('') as g:
         g.custom_command('rest', 'rest_call')
+
+    with self.command_group('') as g:
+        g.custom_command('version', 'show_version', is_preview=True)
diff --git a/src/azure-cli/azure/cli/command_modules/resource/custom.py b/src/azure-cli/azure/cli/command_modules/resource/custom.py
index d0d39ab2dbb..f458c3811b6 100644
--- a/src/azure-cli/azure/cli/command_modules/resource/custom.py
+++ b/src/azure-cli/azure/cli/command_modules/resource/custom.py
@@ -2025,6 +2025,12 @@ def rest_call(cmd, method, uri, headers=None, uri_parameters=None,
             print(r.text)
 
 
+def show_version(cmd):
+    from azure.cli.core.util import get_az_version_json
+    versions = get_az_version_json()
+    return versions
+
+
 class _ResourceUtils(object):  # pylint: disable=too-many-instance-attributes
     def __init__(self, cli_ctx,
                  resource_group_name=None, resource_provider_namespace=None,
diff --git a/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_version.py b/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_version.py
new file mode 100644
index 00000000000..cade56c37f7
--- /dev/null
+++ b/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_version.py
@@ -0,0 +1,27 @@
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+import unittest
+from typing import Dict
+
+from azure.cli.testsdk import ScenarioTest
+
+
+class VersionTest(ScenarioTest):
+
+    def test_version(self):
+        output = self.cmd('az version').get_output_in_json()
+        self.assertIn('azure-cli', output)
+        self.assertIn('azure-cli-command-modules-nspkg', output)
+        self.assertIn('azure-cli-dev-tools', output)
+        self.assertIn('azure-cli-nspkg', output)
+        self.assertIn('azure-cli-telemetry', output)
+        self.assertIn('azure-cli-testsdk', output)
+        self.assertIn('extensions', output)
+        self.assertIsInstance(output['extensions'], Dict)
+
+
+if __name__ == '__main__':
+    unittest.main()