diff --git a/Gems/WhiteBox/Code/Include/WhiteBox/WhiteBoxToolApi.h b/Gems/WhiteBox/Code/Include/WhiteBox/WhiteBoxToolApi.h
index f47c5c6b0e..5b8d384774 100644
--- a/Gems/WhiteBox/Code/Include/WhiteBox/WhiteBoxToolApi.h
+++ b/Gems/WhiteBox/Code/Include/WhiteBox/WhiteBoxToolApi.h
@@ -102,6 +102,9 @@ namespace WhiteBox
         //! Alias for a collection of faces.
         using Faces = AZStd::vector<Face>;
 
+        //! Underlying representation of the White Box mesh (serialized halfedge data).
+        using WhiteBoxMeshStream = AZStd::vector<AZ::u8>;
+
         //! Represents the vertex handles to be used to form a new face.
         struct FaceVertHandles
         {
@@ -729,7 +732,7 @@ namespace WhiteBox
         //! Take an input stream of bytes and create a white box mesh from the deserialized data.
         //! @return Will return false if any error was encountered during deserialization, true otherwise.
         //! @note A white box mesh must have been created first.
-        bool ReadMesh(WhiteBoxMesh& whiteBox, const AZStd::vector<AZ::u8>& input);
+        bool ReadMesh(WhiteBoxMesh& whiteBox, const WhiteBoxMeshStream& input);
 
         //! Take an input stream and create a white box mesh from the deserialized data.
         //! @return Will return false if any error was encountered during deserialization, true otherwise.
@@ -738,7 +741,7 @@ namespace WhiteBox
 
         //! Take a white box mesh and write it out to a stream of bytes.
         //! @return Will return false if any error was encountered during serialization, true otherwise.
-        bool WriteMesh(const WhiteBoxMesh& whiteBox, AZStd::vector<AZ::u8>& output);
+        bool WriteMesh(const WhiteBoxMesh& whiteBox, WhiteBoxMeshStream& output);
 
         //! Clones the white box mesh object into a new mesh.
         //! @return Will return null if any error was encountered during serialization, otherwise the cloned mesh.
diff --git a/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAsset.h b/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAsset.h
index f5915d033b..d25af2fed2 100644
--- a/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAsset.h
+++ b/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAsset.h
@@ -51,12 +51,12 @@ namespace WhiteBox
                 return AZStd::move(m_mesh);
             }
 
-            void SetWhiteBoxData(AZStd::vector<AZ::u8> whiteBoxData)
+            void SetWhiteBoxData(Api::WhiteBoxMeshStream whiteBoxData)
             {
                 m_whiteBoxData = AZStd::move(whiteBoxData);
             }
 
-            const AZStd::vector<AZ::u8>& GetWhiteBoxData() const
+            const Api::WhiteBoxMeshStream& GetWhiteBoxData() const
             {
                 return m_whiteBoxData;
             }
@@ -73,7 +73,7 @@ namespace WhiteBox
             }
 
             Api::WhiteBoxMeshPtr m_mesh;
-            AZStd::vector<AZ::u8> m_whiteBoxData; //! Data used for creating undo commands.
+            Api::WhiteBoxMeshStream m_whiteBoxData; //! Data used for creating undo commands.
         };
     } // namespace Pipeline
 } // namespace WhiteBox
diff --git a/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetHandler.cpp b/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetHandler.cpp
index a64c552bb6..72a754f05f 100644
--- a/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetHandler.cpp
+++ b/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetHandler.cpp
@@ -112,7 +112,9 @@ namespace WhiteBox
 
             const auto size = stream->GetLength();
 
-            AZStd::vector<AZ::u8> whiteBoxData(size);
+            Api::WhiteBoxMeshStream whiteBoxData;
+            whiteBoxData.reserve(size);
+
             stream->Read(size, whiteBoxData.data());
 
             auto whiteBoxMesh = WhiteBox::Api::CreateWhiteBoxMesh();
diff --git a/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetUndoCommand.cpp b/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetUndoCommand.cpp
index ef11b8d47d..19cbc802dd 100644
--- a/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetUndoCommand.cpp
+++ b/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetUndoCommand.cpp
@@ -29,12 +29,12 @@ namespace WhiteBox
         m_asset = asset;
     }
 
-    void WhiteBoxMeshAssetUndoCommand::SetUndoState(const AZStd::vector<AZ::u8>& undoState)
+    void WhiteBoxMeshAssetUndoCommand::SetUndoState(const Api::WhiteBoxMeshStream& undoState)
     {
         m_undoState = undoState;
     }
 
-    void WhiteBoxMeshAssetUndoCommand::SetRedoState(const AZStd::vector<AZ::u8>& redoState)
+    void WhiteBoxMeshAssetUndoCommand::SetRedoState(const Api::WhiteBoxMeshStream& redoState)
     {
         m_redoState = redoState;
     }
diff --git a/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetUndoCommand.h b/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetUndoCommand.h
index eb657c5a85..3f6258c1b4 100644
--- a/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetUndoCommand.h
+++ b/Gems/WhiteBox/Code/Source/Asset/WhiteBoxMeshAssetUndoCommand.h
@@ -34,8 +34,8 @@ namespace WhiteBox
         ~WhiteBoxMeshAssetUndoCommand() override = default;
 
         void SetAsset(AZ::Data::Asset<Pipeline::WhiteBoxMeshAsset> asset);
-        void SetUndoState(const AZStd::vector<AZ::u8>& undoState);
-        void SetRedoState(const AZStd::vector<AZ::u8>& redoState);
+        void SetUndoState(const Api::WhiteBoxMeshStream& undoState);
+        void SetRedoState(const Api::WhiteBoxMeshStream& redoState);
 
         // AzToolsFramework::UndoSystem::URSequencePoint ...
         void Undo() override;
@@ -44,7 +44,7 @@ namespace WhiteBox
 
     protected:
         AZ::Data::Asset<Pipeline::WhiteBoxMeshAsset> m_asset;
-        AZStd::vector<AZ::u8> m_undoState;
-        AZStd::vector<AZ::u8> m_redoState;
+        Api::WhiteBoxMeshStream m_undoState;
+        Api::WhiteBoxMeshStream m_redoState;
     };
 } // namespace WhiteBox
diff --git a/Gems/WhiteBox/Code/Source/Core/WhiteBoxToolApi.cpp b/Gems/WhiteBox/Code/Source/Core/WhiteBoxToolApi.cpp
index 49e713810e..fbab501e8f 100644
--- a/Gems/WhiteBox/Code/Source/Core/WhiteBoxToolApi.cpp
+++ b/Gems/WhiteBox/Code/Source/Core/WhiteBoxToolApi.cpp
@@ -3379,7 +3379,7 @@ namespace WhiteBox
             CalculatePlanarUVs(whiteBox);
         }
 
-        bool WriteMesh(const WhiteBoxMesh& whiteBox, AZStd::vector<AZ::u8>& output)
+        bool WriteMesh(const WhiteBoxMesh& whiteBox, WhiteBoxMeshStream& output)
         {
             AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzToolsFramework);
 
@@ -3403,7 +3403,7 @@ namespace WhiteBox
             return false;
         }
 
-        bool ReadMesh(WhiteBoxMesh& whiteBox, const AZStd::vector<AZ::u8>& input)
+        bool ReadMesh(WhiteBoxMesh& whiteBox, const WhiteBoxMeshStream& input)
         {
             AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzToolsFramework);
 
@@ -3437,7 +3437,7 @@ namespace WhiteBox
         {
             AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzToolsFramework);
 
-            AZStd::vector<AZ::u8> clonedData;
+            WhiteBoxMeshStream clonedData;
             if (!WriteMesh(whiteBox, clonedData))
             {
                 return nullptr;
@@ -3461,7 +3461,7 @@ namespace WhiteBox
 
         bool SaveToWbm(const WhiteBoxMesh& whiteBox, AZ::IO::GenericStream& stream)
         {
-            AZStd::vector<AZ::u8> buffer;
+            WhiteBoxMeshStream buffer;
             const bool success = WhiteBox::Api::WriteMesh(whiteBox, buffer);
 
             const auto bytesWritten = stream.Write(buffer.size(), buffer.data());
diff --git a/Gems/WhiteBox/Code/Source/EditorWhiteBoxComponent.h b/Gems/WhiteBox/Code/Source/EditorWhiteBoxComponent.h
index 5d7ac3b303..02b50a9407 100644
--- a/Gems/WhiteBox/Code/Source/EditorWhiteBoxComponent.h
+++ b/Gems/WhiteBox/Code/Source/EditorWhiteBoxComponent.h
@@ -124,7 +124,7 @@ namespace WhiteBox
         AZStd::optional<AZStd::unique_ptr<RenderMeshInterface>>
             m_renderMesh; //!< The render mesh to use for the White Box mesh data.
         AZ::Transform m_worldFromLocal = AZ::Transform::CreateIdentity(); //!< Cached world transform of Entity.
-        AZStd::vector<AZ::u8> m_whiteBoxData; //!< Serialized White Box mesh data.
+        Api::WhiteBoxMeshStream m_whiteBoxData; //!< Serialized White Box mesh data.
         //! Holds a reference to an optional WhiteBoxMeshAsset and manages the lifecycle of adding/removing an asset.
         EditorWhiteBoxMeshAsset* m_editorMeshAsset = nullptr;
         AZStd::optional<AZ::Aabb> m_worldAabb; //!< Cached world aabb (used for selection/view determination).