diff --git a/MdePkg/Include/Protocol/BootManagerPolicy.h b/MdePkg/Include/Protocol/BootManagerPolicy.h
index 13f1a7fcd3..0d3d7567ac 100644
--- a/MdePkg/Include/Protocol/BootManagerPolicy.h
+++ b/MdePkg/Include/Protocol/BootManagerPolicy.h
@@ -5,6 +5,7 @@
   to connect devices using platform policy.
 
   Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) Microsoft Corporation.<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent
 **/
 
@@ -31,6 +32,11 @@
     0x113B2126, 0xFC8A, 0x11E3, { 0xBD, 0x6C, 0xB8, 0xE8, 0x56, 0x2C, 0xBA, 0xFA } \
   }
 
+#define EFI_BOOT_MANAGER_POLICY_STORAGE_GUID \
+  { \
+    0xCD68FE79, 0xD3CB, 0x436E, { 0xA8, 0x50, 0xF4, 0x43, 0xC8, 0x8C, 0xFB, 0x49 } \
+  }
+
 typedef struct _EFI_BOOT_MANAGER_POLICY_PROTOCOL EFI_BOOT_MANAGER_POLICY_PROTOCOL;
 
 #define EFI_BOOT_MANAGER_POLICY_PROTOCOL_REVISION  0x00010000
@@ -98,6 +104,12 @@ EFI_STATUS
   EFI_BOOT_SERVICES.ConnectController(). If the Boot Manager has policy
   associated with connect all UEFI drivers this policy will be used.
 
+  If Class is EFI_BOOT_MANAGER_POLICY_STORAGE_GUID then the Boot Manager will
+  connect the protocols associated with the discoverable storage disks. This may include
+  EFI_BLOCK_IO_PROTOCOL, EFI_SIMPLE_FILE_SYSTEM_PROTOCOL, or other storage protocols
+  appropriate to the device. Some platforms may choose to restrict the connected
+  devices to exclude USB or other peripherals.
+
   A platform can also define platform specific Class values as a properly generated
   EFI_GUID would never conflict with this specification.
 
@@ -128,5 +140,6 @@ extern EFI_GUID  gEfiBootManagerPolicyProtocolGuid;
 extern EFI_GUID  gEfiBootManagerPolicyConsoleGuid;
 extern EFI_GUID  gEfiBootManagerPolicyNetworkGuid;
 extern EFI_GUID  gEfiBootManagerPolicyConnectAllGuid;
+extern EFI_GUID  gEfiBootManagerPolicyStorageGuid;
 
 #endif
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 5e476b1331..f4a60e5cc7 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -11,6 +11,7 @@
 # Copyright (c) 2021 - 2022, Arm Limited. All rights reserved.<BR>
 # Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.<BR>
 # Copyright (c) 2023, Ampere Computing LLC. All rights reserved.<BR>
+# Copyright (c) Microsoft Corporation.<BR>
 #
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -702,6 +703,7 @@
   gEfiBootManagerPolicyConsoleGuid    = { 0xCAB0E94C, 0xE15F, 0x11E3, { 0x91, 0x8D, 0xB8, 0xE8, 0x56, 0x2C, 0xBA, 0xFA }}
   gEfiBootManagerPolicyNetworkGuid    = { 0xD04159DC, 0xE15F, 0x11E3, { 0xB2, 0x61, 0xB8, 0xE8, 0x56, 0x2C, 0xBA, 0xFA }}
   gEfiBootManagerPolicyConnectAllGuid = { 0x113B2126, 0xFC8A, 0x11E3, { 0xBD, 0x6C, 0xB8, 0xE8, 0x56, 0x2C, 0xBA, 0xFA }}
+  gEfiBootManagerPolicyStorageGuid    = { 0xCD68FE79, 0xD3CB, 0x436E, { 0xA8, 0x50, 0xF4, 0x43, 0xC8, 0x8C, 0xFB, 0x49 }}
 
   ## Include/Protocol/DevicePath.h
   gEfiVirtualDiskGuid            = { 0x77AB535A, 0x45FC, 0x624B, {0x55, 0x60, 0xF7, 0xB2, 0x81, 0xD1, 0xF9, 0x6E }}