diff --git a/app/code/Magento/LoginAsCustomer/Plugin/AdminAddCommentOnOrderPlacementPlugin.php b/app/code/Magento/LoginAsCustomer/Plugin/AdminAddCommentOnOrderPlacementPlugin.php
new file mode 100644
index 0000000000000..e87e5553ef4c8
--- /dev/null
+++ b/app/code/Magento/LoginAsCustomer/Plugin/AdminAddCommentOnOrderPlacementPlugin.php
@@ -0,0 +1,55 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\LoginAsCustomer\Plugin;
+
+use Magento\Backend\Model\Auth\Session;
+use Magento\Sales\Model\Order;
+
+/**
+ * Add comment after order placed by admin using admin panel.
+ */
+class AdminAddCommentOnOrderPlacementPlugin
+{
+    /**
+     * @var Session
+     */
+    private $userSession;
+
+    /**
+     * @param Session $session
+     */
+    public function __construct(
+        Session $session
+    ) {
+        $this->userSession = $session;
+    }
+
+    /**
+     * Add comment after order placed by admin using admin panel.
+     *
+     * @param Order $subject
+     * @param Order $result
+     * @return Order
+     */
+    public function afterPlace(Order $subject, Order $result): Order
+    {
+        $adminUser = $this->userSession->getUser();
+        $subject->addCommentToStatusHistory(
+            'Order Placed by Store Administrator',
+            false,
+            true
+        )->setIsCustomerNotified(false);
+        $subject->addCommentToStatusHistory(
+            "Order Placed by {$adminUser->getFirstName()} {$adminUser->getLastName()} using Admin Panel",
+            false,
+            false
+        )->setIsCustomerNotified(false);
+
+        return $result;
+    }
+}
diff --git a/app/code/Magento/LoginAsCustomer/Plugin/FrontAddCommentOnOrderPlacementPlugin.php b/app/code/Magento/LoginAsCustomer/Plugin/FrontAddCommentOnOrderPlacementPlugin.php
new file mode 100644
index 0000000000000..898e80356656c
--- /dev/null
+++ b/app/code/Magento/LoginAsCustomer/Plugin/FrontAddCommentOnOrderPlacementPlugin.php
@@ -0,0 +1,67 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\LoginAsCustomer\Plugin;
+
+use Magento\Customer\Model\Session;
+use Magento\Sales\Model\Order;
+use Magento\User\Model\UserFactory;
+
+/**
+ * Add comment after order placed by admin using login-as-customer.
+ */
+class FrontAddCommentOnOrderPlacementPlugin
+{
+    /**
+     * @var Session
+     */
+    private $customerSession;
+
+    /**
+     * @var UserFactory
+     */
+    private $userFactory;
+
+    /**
+     * @param Session $session
+     * @param UserFactory $userFactory
+     */
+    public function __construct(
+        Session $session,
+        UserFactory $userFactory
+    ) {
+        $this->customerSession = $session;
+        $this->userFactory = $userFactory;
+    }
+
+    /**
+     * Add comment after order placed by admin using login-as-customer.
+     *
+     * @param Order $subject
+     * @param Order $result
+     * @return Order
+     */
+    public function afterPlace(Order $subject, Order $result): Order
+    {
+        $adminId = $this->customerSession->getLoggedAsCustomerAdmindId();
+        if ($adminId) {
+            $adminUser = $this->userFactory->create()->load($adminId);
+            $subject->addCommentToStatusHistory(
+                'Order Placed by Store Administrator',
+                false,
+                true
+            )->setIsCustomerNotified(false);
+            $subject->addCommentToStatusHistory(
+                "Order Placed by {$adminUser->getFirstName()} {$adminUser->getLastName()} using Login as Customer",
+                false,
+                false
+            )->setIsCustomerNotified(false);
+        }
+
+        return $result;
+    }
+}
diff --git a/app/code/Magento/LoginAsCustomer/etc/adminhtml/di.xml b/app/code/Magento/LoginAsCustomer/etc/adminhtml/di.xml
index df46bb8d8676f..b676052c1943b 100644
--- a/app/code/Magento/LoginAsCustomer/etc/adminhtml/di.xml
+++ b/app/code/Magento/LoginAsCustomer/etc/adminhtml/di.xml
@@ -9,4 +9,7 @@
     <type name="Magento\Backend\Block\Widget\Button\Toolbar">
         <plugin name="Magento_LoginAsCustomer::toolbar_button" type="Magento\LoginAsCustomer\Plugin\Button\ToolbarPlugin" />
     </type>
+    <type name="Magento\Sales\Model\Order">
+        <plugin name="lac-admin-order-placement-comment" type="Magento\LoginAsCustomer\Plugin\AdminAddCommentOnOrderPlacementPlugin"/>
+    </type>
 </config>
diff --git a/app/code/Magento/LoginAsCustomer/etc/webapi_rest/di.xml b/app/code/Magento/LoginAsCustomer/etc/webapi_rest/di.xml
new file mode 100755
index 0000000000000..0b39471eb7968
--- /dev/null
+++ b/app/code/Magento/LoginAsCustomer/etc/webapi_rest/di.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <type name="Magento\Sales\Model\Order">
+        <plugin name="lac-front-order-placement-comment" type="Magento\LoginAsCustomer\Plugin\FrontAddCommentOnOrderPlacementPlugin"/>
+    </type>
+</config>