diff --git a/Code/Editor/BaseLibrary.cpp b/Code/Editor/BaseLibrary.cpp
index ee1c85756d..3c3ccfe13d 100644
--- a/Code/Editor/BaseLibrary.cpp
+++ b/Code/Editor/BaseLibrary.cpp
@@ -258,9 +258,8 @@ bool CBaseLibrary::SaveLibrary(const char* name, bool saveEmptyLibrary)
     }
     if (!bRes)
     {
-        string strMessage;
         QByteArray filenameUtf8 = fileName.toUtf8();
-        strMessage.Format("The file %s is read-only and the save of the library couldn't be performed. Try to remove the \"read-only\" flag or check-out the file and then try again.", filenameUtf8.data());
+        AZStd::string strMessage = AZStd::string::format("The file %s is read-only and the save of the library couldn't be performed. Try to remove the \"read-only\" flag or check-out the file and then try again.", filenameUtf8.data());
         CryMessageBox(strMessage.c_str(), "Saving Error", MB_OK | MB_ICONWARNING);
     }
     return bRes;
diff --git a/Code/Editor/Core/QtEditorApplication.cpp b/Code/Editor/Core/QtEditorApplication.cpp
index 46e789cd7c..9ec3b57e29 100644
--- a/Code/Editor/Core/QtEditorApplication.cpp
+++ b/Code/Editor/Core/QtEditorApplication.cpp
@@ -206,11 +206,8 @@ namespace
 
     static void LogToDebug([[maybe_unused]] QtMsgType Type, [[maybe_unused]] const QMessageLogContext& Context, const QString& message)
     {
-#if defined(WIN32) || defined(WIN64)
-        OutputDebugStringW(L"Qt: ");
-        OutputDebugStringW(reinterpret_cast<const wchar_t*>(message.utf16()));
-        OutputDebugStringW(L"\n");
-#endif
+        AZ::Debug::Platform::OutputToDebugger("Qt", message.utf8());
+        AZ::Debug::Platform::OutputToDebugger(nullptr, "\n");
     }
 }
 
diff --git a/Code/Editor/IEditorImpl.cpp b/Code/Editor/IEditorImpl.cpp
index c09c0a8e62..2e755bd36a 100644
--- a/Code/Editor/IEditorImpl.cpp
+++ b/Code/Editor/IEditorImpl.cpp
@@ -1109,7 +1109,7 @@ void CEditorImpl::DetectVersion()
 
     char ver[1024 * 8];
 
-    GetModuleFileName(NULL, exe, _MAX_PATH);
+    AZ::Utils::GetExecutablePath(exe, _MAX_PATH);
 
     int verSize = GetFileVersionInfoSize(exe, &dwHandle);
     if (verSize > 0)
diff --git a/Code/Editor/Include/IFileUtil.h b/Code/Editor/Include/IFileUtil.h
index f402786e67..8cb86b812e 100644
--- a/Code/Editor/Include/IFileUtil.h
+++ b/Code/Editor/Include/IFileUtil.h
@@ -8,7 +8,6 @@
 
 #pragma once
 
-#include "StringUtils.h"
 #include "../Include/SandboxAPI.h"
 
 class QWidget;
diff --git a/Code/Editor/QtUtil.h b/Code/Editor/QtUtil.h
index bb1f8ba427..a9aaadc491 100644
--- a/Code/Editor/QtUtil.h
+++ b/Code/Editor/QtUtil.h
@@ -10,8 +10,6 @@
 #pragma once
 
 #include <QString>
-#include <CryString.h>
-#include "UnicodeFunctions.h"
 
 #include <QApplication>
 #include <QDropEvent>
@@ -36,28 +34,6 @@ public:
 
 namespace QtUtil
 {
-    // From QString to CryString
-    inline CryStringT<char> ToString(const QString& str)
-    {
-        return Unicode::Convert<CryStringT<char> >(str);
-    }
-
-    // From CryString to QString
-    inline QString ToQString(const CryStringT<char>& str)
-    {
-        return Unicode::Convert<QString>(str);
-    }
-
-    // From const char * to QString
-    inline QString ToQString(const char* str, size_t len = -1)
-    {
-        if (len == -1)
-        {
-            len = strlen(str);
-        }
-        return Unicode::Convert<QString>(str, str + len);
-    }
-
     // Replacement for CString::trimRight()
     inline QString trimRight(const QString& str)
     {
diff --git a/Code/Editor/Util/FileUtil.h b/Code/Editor/Util/FileUtil.h
index 000215e98d..06cceaaafc 100644
--- a/Code/Editor/Util/FileUtil.h
+++ b/Code/Editor/Util/FileUtil.h
@@ -10,7 +10,6 @@
 #pragma once
 
 #include "CryThread.h"
-#include "StringUtils.h"
 #include "../Include/SandboxAPI.h"
 #include <QString>
 #include <QFileInfo>
diff --git a/Code/Editor/Util/PathUtil.cpp b/Code/Editor/Util/PathUtil.cpp
index 4bb5c20ece..e91d85e4d2 100644
--- a/Code/Editor/Util/PathUtil.cpp
+++ b/Code/Editor/Util/PathUtil.cpp
@@ -15,24 +15,20 @@
 #include <AzToolsFramework/API/EditorAssetSystemAPI.h> // for ebus events
 #include <AzFramework/StringFunc/StringFunc.h>
 #include <AzFramework/API/ApplicationAPI.h>
+#include <AzCore/std/string/conversions.h>
 
 #include <QRegularExpression>
 
-namespace
-{
-    string g_currentModName; // folder name only!
-}
-
 namespace Path
 {
     //////////////////////////////////////////////////////////////////////////
     void SplitPath(const QString& rstrFullPathFilename, QString& rstrDriveLetter, QString& rstrDirectory, QString& rstrFilename, QString& rstrExtension)
     {
-        string          strFullPathString(rstrFullPathFilename.toUtf8().data());
-        string          strDriveLetter;
-        string          strDirectory;
-        string          strFilename;
-        string          strExtension;
+        AZStd::string   strFullPathString(rstrFullPathFilename.toUtf8().data());
+        AZStd::string   strDriveLetter;
+        AZStd::string   strDirectory;
+        AZStd::string   strFilename;
+        AZStd::string   strExtension;
 
         char*           szPath((char*)strFullPathString.c_str());
         char*           pchLastPosition(szPath);
@@ -81,16 +77,16 @@ namespace Path
             strFilename.assign(pchLastPosition, pchCurrentPosition);
         }
 
-        rstrDriveLetter = strDriveLetter;
-        rstrDirectory = strDirectory;
-        rstrFilename = strFilename;
-        rstrExtension = strExtension;
+        rstrDriveLetter = strDriveLetter.c_str();
+        rstrDirectory = strDirectory.c_str();
+        rstrFilename = strFilename.c_str();
+        rstrExtension = strExtension.c_str();
     }
     //////////////////////////////////////////////////////////////////////////
     void GetDirectoryQueue(const QString& rstrSourceDirectory, QStringList& rcstrDirectoryTree)
     {
-        string                      strCurrentDirectoryName;
-        string                      strSourceDirectory(rstrSourceDirectory.toUtf8().data());
+        AZStd::string           strCurrentDirectoryName;
+        AZStd::string           strSourceDirectory(rstrSourceDirectory.toUtf8().data());
         const char*             szSourceDirectory(strSourceDirectory.c_str());
         const char*             pchCurrentPosition(szSourceDirectory);
         const char*             pchLastPosition(szSourceDirectory);
@@ -207,7 +203,9 @@ namespace Path
 
     bool IsFolder(const char* pPath)
     {
-        DWORD attrs = GetFileAttributes(pPath);
+        AZStd::wstring pPathW;
+        AZStd::to_wstring(pPathW, pPath);
+        DWORD attrs = GetFileAttributes(pPathW.c_str());
 
         if (attrs == FILE_ATTRIBUTE_DIRECTORY)
         {
@@ -255,16 +253,17 @@ namespace Path
     /// Get the data folder
     AZStd::string GetEditingGameDataFolder()
     {
+        static AZStd::string s_currentModName;
         // query the editor root.  The bus exists in case we want tools to be able to override this.
 
 
-        if (g_currentModName.empty())
+        if (s_currentModName.empty())
         {
             return GetGameAssetsFolder();
         }
         AZStd::string str(GetGameAssetsFolder());
         str += "Mods\\";
-        str += g_currentModName;
+        str += s_currentModName;
         return str;
     }
 
diff --git a/Code/Editor/Util/PathUtil.h b/Code/Editor/Util/PathUtil.h
index 98f484ec94..30887e698b 100644
--- a/Code/Editor/Util/PathUtil.h
+++ b/Code/Editor/Util/PathUtil.h
@@ -93,7 +93,7 @@ namespace Path
 #endif
         file = path_buffer;
     }
-    inline void Split(const string& filepath, string& path, string& file)
+    inline void Split(const AZStd::string& filepath, AZStd::string& path, AZStd::string& file)
     {
         char path_buffer[_MAX_PATH];
         char drive[_MAX_DRIVE];
@@ -101,7 +101,7 @@ namespace Path
         char fname[_MAX_FNAME];
         char ext[_MAX_EXT];
 #ifdef AZ_COMPILER_MSVC
-        _splitpath_s(filepath, drive, AZ_ARRAY_SIZE(drive), dir, AZ_ARRAY_SIZE(dir), 0, 0, 0, 0);
+        _splitpath_s(filepath.c_str(), drive, AZ_ARRAY_SIZE(drive), dir, AZ_ARRAY_SIZE(dir), 0, 0, 0, 0);
         _makepath_s(path_buffer, AZ_ARRAY_SIZE(path_buffer), drive, dir, 0, 0);
         path = path_buffer;
         _makepath_s(path_buffer, AZ_ARRAY_SIZE(path_buffer), 0, 0, fname, ext);
@@ -137,7 +137,7 @@ namespace Path
         filename = fname;
         fext = ext;
     }
-    inline void Split(const string& filepath, string& path, string& filename, string& fext)
+    inline void Split(const AZStd::string& filepath, AZStd::string& path, AZStd::string& filename, AZStd::string& fext)
     {
         char path_buffer[_MAX_PATH];
         char drive[_MAX_DRIVE];
@@ -145,7 +145,7 @@ namespace Path
         char fname[_MAX_FNAME];
         char ext[_MAX_EXT];
 #ifdef AZ_COMPILER_MSVC
-        _splitpath_s(filepath, drive, AZ_ARRAY_SIZE(drive), dir, AZ_ARRAY_SIZE(dir), fname, AZ_ARRAY_SIZE(fname), ext, AZ_ARRAY_SIZE(ext));
+        _splitpath_s(filepath.c_str(), drive, AZ_ARRAY_SIZE(drive), dir, AZ_ARRAY_SIZE(dir), fname, AZ_ARRAY_SIZE(fname), ext, AZ_ARRAY_SIZE(ext));
         _makepath_s(path_buffer, AZ_ARRAY_SIZE(path_buffer), drive, dir, 0, 0);
 #else
         _splitpath(filepath, drive, dir, fname, ext);
@@ -271,7 +271,7 @@ namespace Path
     }
 
     template<size_t size>
-    inline void AddBackslash(AZstd::fixed_string<size>* path)
+    inline void AddBackslash(AZStd::fixed_string<size>* path)
     {
         if (path->empty())
         {
@@ -284,7 +284,7 @@ namespace Path
     }
 
     template<size_t size>
-    inline void AddSlash(AZstd::fixed_string<size>* path)
+    inline void AddSlash(AZStd::fixed_string<size>* path)
     {
         if (path->empty())
         {
@@ -357,7 +357,7 @@ namespace Path
     {
         return CaselessPaths(GetRelativePath(path, true));
     }
-    inline string FullPathToGamePath(const char* path)
+    inline AZStd::string FullPathToGamePath(const char* path)
     {
         return CaselessPaths(GetRelativePath(path, true)).toUtf8().data();
     }
@@ -394,7 +394,7 @@ namespace Path
     inline QString GetAudioLocalizationFolder(bool returnAbsolutePath)
     {
         // Omit the trailing slash!
-        QString sLocalizationFolder(QString(PathUtil::GetLocalizationFolder()).left(static_cast<int>(PathUtil::GetLocalizationFolder().size()) - 1));
+        QString sLocalizationFolder(QString(PathUtil::GetLocalizationFolder().c_str()).left(static_cast<int>(PathUtil::GetLocalizationFolder().size()) - 1));
 
         if (!sLocalizationFolder.isEmpty())
         {
diff --git a/Code/Framework/AzCore/AzCore/std/string/conversions.h b/Code/Framework/AzCore/AzCore/std/string/conversions.h
index cb90881933..fcfe82ba5f 100644
--- a/Code/Framework/AzCore/AzCore/std/string/conversions.h
+++ b/Code/Framework/AzCore/AzCore/std/string/conversions.h
@@ -80,9 +80,7 @@ namespace AZStd
                 }
                 else
                 {
-                    // Workaround to defer static_assert evaluation until this function is invoked by using the template parameter
-                    using StringType = AZStd::basic_string<string::value_type, string::traits_type, Allocator1>;
-                    static_assert(!AZStd::is_same_v<StringType, StringType>, "only wchar_t types of size 2 or 4 can be converted to utf8");
+                    static_assert(false, "only wchar_t types of size 2 or 4 can be converted to utf8");
                 }
             }
 
@@ -123,6 +121,22 @@ namespace AZStd
                     static_assert(!AZStd::is_same_v<StringType, StringType>, "Cannot convert a utf8 string to a wchar_t that isn't size 2 or 4");
                 }
             }
+
+            static inline void to_wstring(wchar_t* dest, size_t destSize, const char* first, const char* last)
+            {
+                if constexpr (Size == 2)
+                {
+                    Utf8::Unchecked::utf8to16(first, last, dest, destSize);
+                }
+                else if constexpr (Size == 4)
+                {
+                    Utf8::Unchecked::utf8to32(first, last, dest, destSize);
+                }
+                else
+                {
+                    static_assert(false, "Cannot convert a utf8 string to a wchar_t that isn't size 2 or 4");
+                }
+            }
         };
     }
     // 21.5: numeric conversions
@@ -348,7 +362,7 @@ namespace AZStd
     {
         if (srcLen == 0)
         {
-            srcLen = wcslen(str) + 1;
+            srcLen = wcslen(str);
         }
 
         if (srcLen > 0)
@@ -497,6 +511,19 @@ namespace AZStd
         return to_wstring(dest, src.c_str(), src.length());
     }
 
+    inline void to_wstring(wchar_t* dest, size_t destSize, const char* str, size_t srcLen = 0)
+    {
+        if (srcLen == 0)
+        {
+            srcLen = strlen(str) + 1;
+        }
+
+        if (srcLen > 0)
+        {
+            Internal::WCharTPlatformConverter<>::to_wstring(dest, destSize, str, str + srcLen + 1); // copy null terminator
+        }
+    }
+
     // Convert a range of chars to lower case
 #if defined(AZSTD_USE_OLD_RW_STL)
     template<class Iterator>
diff --git a/Code/Legacy/CryCommon/IStatObj.h b/Code/Legacy/CryCommon/IStatObj.h
index ff3bbc41e3..4921ab3a25 100644
--- a/Code/Legacy/CryCommon/IStatObj.h
+++ b/Code/Legacy/CryCommon/IStatObj.h
@@ -201,7 +201,7 @@ struct IStreamable
     virtual void StartStreaming(bool bFinishNow, IReadStream_AutoPtr* ppStream) = 0;
     virtual int GetStreamableContentMemoryUsage(bool bJustForDebug = false) = 0;
     virtual void ReleaseStreamableContent() = 0;
-    virtual void GetStreamableName(string& sName) = 0;
+    virtual void GetStreamableName(AZStd::string& sName) = 0;
     virtual uint32 GetLastDrawMainFrameId() = 0;
     virtual bool IsUnloadable() const = 0;
 
@@ -239,8 +239,8 @@ struct IStatObj
         SSubObject() { bShadowProxy = 0; }
 
         EStaticSubObjectType nType;
-        string name;
-        string properties;
+        AZStd::string name;
+        AZStd::string properties;
         int nParent;          // Index of the parent sub object, if there`s hierarchy between them.
         Matrix34 tm;          // Transformation matrix.
         Matrix34 localTM;     // Local transformation matrix, relative to parent.
@@ -510,10 +510,10 @@ struct IStatObj
     virtual bool IsUnloadable() const = 0;
     virtual void SetCanUnload(bool value) = 0;
 
-    virtual string& GetFileName() = 0;
-    virtual const string& GetFileName() const = 0;
+    virtual AZStd::string& GetFileName() = 0;
+    virtual const AZStd::string& GetFileName() const = 0;
 
-    virtual const string& GetCGFNodeName() const = 0;
+    virtual const AZStd::string& GetCGFNodeName() const = 0;
 
     // Summary:
     //     Returns the filename of the object
diff --git a/Code/Legacy/CryCommon/IXml.h b/Code/Legacy/CryCommon/IXml.h
index a380ce167b..80c2415f9c 100644
--- a/Code/Legacy/CryCommon/IXml.h
+++ b/Code/Legacy/CryCommon/IXml.h
@@ -101,7 +101,13 @@ public:
     XmlString(const char* str)
         : AZStd::string(str) {};
 
-    operator const char*() const {
+    size_t GetAllocatedMemory() const
+    {
+        return sizeof(XmlString) + capacity() * sizeof(AZStd::string::value_type);
+    }
+
+    operator const char*() const
+    {
         return c_str();
     }
 };
diff --git a/Code/Tools/CrashHandler/Support/platform/win/CrashSupport_win.cpp b/Code/Tools/CrashHandler/Support/platform/win/CrashSupport_win.cpp
index 3933b5ea91..6010ac8e17 100644
--- a/Code/Tools/CrashHandler/Support/platform/win/CrashSupport_win.cpp
+++ b/Code/Tools/CrashHandler/Support/platform/win/CrashSupport_win.cpp
@@ -10,13 +10,14 @@
 #include <algorithm>
 
 #include <AzCore/PlatformIncl.h>
+#include <AzCore/Utils/Utils.h>
 #include <time.h>
 
 namespace CrashHandler
 {
-    void GetExecutablePathA(char* pathBuffer, int& bufferSize)
+    void GetExecutablePath(char* pathBuffer, int& bufferSize)
     {
-        GetModuleFileNameA(nullptr, pathBuffer, bufferSize);
+        AZ::Utils::GetExecutablePath(pathBuffer, bufferSize);
     }
 
     void GetExecutablePathW(wchar_t* pathBuffer, int& bufferSize)
diff --git a/Code/Tools/GridHub/GridHub/gridhub.cpp b/Code/Tools/GridHub/GridHub/gridhub.cpp
index 3dbecf681f..978589ab74 100644
--- a/Code/Tools/GridHub/GridHub/gridhub.cpp
+++ b/Code/Tools/GridHub/GridHub/gridhub.cpp
@@ -358,13 +358,11 @@ GridHubComponent::GridHubComponent()
     m_isLogToFile = false;
     
 #ifdef AZ_PLATFORM_WINDOWS
-    TCHAR name[MAX_COMPUTERNAME_LENGTH + 1];
+    wchar_t name[MAX_COMPUTERNAME_LENGTH + 1];
     DWORD dwCompNameLen = AZ_ARRAY_SIZE(name);
-    if ( GetComputerName(name, &dwCompNameLen) != 0 ) 
+    if (GetComputerName(name, &dwCompNameLen) != 0) 
     {
-        char c[MAX_COMPUTERNAME_LENGTH + 1];
-        wcstombs(c, name, AZ_ARRAY_SIZE(c));
-        m_hubName = c;
+        AZStd::to_string(m_hubName, name);
     }
     else
 #endif
diff --git a/Code/Tools/GridHub/GridHub/main.cpp b/Code/Tools/GridHub/GridHub/main.cpp
index f02906e0d4..670367bf06 100644
--- a/Code/Tools/GridHub/GridHub/main.cpp
+++ b/Code/Tools/GridHub/GridHub/main.cpp
@@ -16,7 +16,6 @@
 #include <shlguid.h>
 #include <shlobj.h>
 #include <shlwapi.h>
-#include <tchar.h>
 #endif
 
 #include "gridhub.hxx"
@@ -39,6 +38,7 @@ AZ_POP_DISABLE_WARNING
 #include <AzCore/Math/Crc.h>
 #include <AzCore/IO/SystemFile.h>
 #include <AzCore/std/parallel/mutex.h>
+#include <AzCore/Utils/Utils.h>
 
 #ifdef AZ_PLATFORM_WINDOWS
 #include <Shlwapi.h>
@@ -53,9 +53,9 @@ AZ_POP_DISABLE_WARNING
 #endif
 
 #ifdef AZ_PLATFORM_WINDOWS
-#define GRIDHUB_TSR_SUFFIX _T("_copyapp_")
-#define GRIDHUB_TSR_NAME _T("GridHub_copyapp_.exe")
-#define GRIDHUB_IMAGE_NAME _T("GridHub.exe")
+#define GRIDHUB_TSR_SUFFIX L"_copyapp_"
+#define GRIDHUB_TSR_NAME L"GridHub_copyapp_.exe"
+#define GRIDHUB_IMAGE_NAME L"GridHub.exe"
 #else
 #define GRIDHUB_TSR_SUFFIX "_copyapp_"
 #define GRIDHUB_TSR_NAME "GridHub_copyapp_"
@@ -191,7 +191,7 @@ protected:
          specializations.Append("gridhub");
      }
 
-    QString         m_originalExeFileName;
+     QString        m_originalExeFileName;
      QDateTime      m_originalExeLastModified;
      bool           m_monitorForExeChanges;
      bool           m_needToRelaunch;
@@ -305,22 +305,22 @@ public:
     {
 #ifdef AZ_PLATFORM_WINDOWS
         HRESULT hres;
-        TCHAR startupFolder[MAX_PATH] = {0};
-        TCHAR fullLinkName[MAX_PATH] = {0};
+        wchar_t startupFolder[MAX_PATH] = {0};
+        wchar_t fullLinkName[MAX_PATH] = {0};
 
         LPITEMIDLIST pidlFolder = NULL;
         hres = SHGetFolderLocation(0,/*CSIDL_COMMON_STARTUP all users required admin access*/CSIDL_STARTUP,NULL,0,&pidlFolder);
         if (SUCCEEDED(hres))
         {
-            if( SHGetPathFromIDList(pidlFolder,startupFolder) )
+            if (SHGetPathFromIDList(pidlFolder, startupFolder))
             {
-                _tcscat_s(fullLinkName,startupFolder);
-                _tcscat_s(fullLinkName,"\\Amazon Grid Hub.lnk");
+                wcscat_s(fullLinkName, startupFolder);
+                wcscat_s(fullLinkName, L"\\Amazon Grid Hub.lnk");
             }
             CoTaskMemFree(pidlFolder);
         }
 
-        if( moduleFilename.isEmpty() || _tcslen(fullLinkName) == 0 )
+        if( moduleFilename.isEmpty() || wcslen(fullLinkName) == 0 )
             return;
 
         // for development, never autoadd to startup
@@ -342,8 +342,8 @@ public:
                 IPersistFile* ppf;
 
                 // Set the path to the shortcut target and add the description.
-                psl->SetPath(moduleFilename.toUtf8().data());
-                psl->SetDescription("Amazon Grid Hub");
+                psl->SetPath(moduleFilename.toStdWString().c_str());
+                psl->SetDescription(L"Amazon Grid Hub");
 
                 // Query IShellLink for the IPersistFile interface, used for saving the
                 // shortcut in persistent storage.
@@ -351,16 +351,8 @@ public:
 
                 if (SUCCEEDED(hres))
                 {
-                    WCHAR wsz[MAX_PATH];
-
-                    // Ensure that the string is Unicode.
-                    MultiByteToWideChar(CP_ACP, 0, fullLinkName, -1, wsz, MAX_PATH);
-
-                    // Add code here to check return value from MultiByteWideChar
-                    // for success.
-
                     // Save the link by calling IPersistFile::Save.
-                    hres = ppf->Save(wsz, TRUE);
+                    hres = ppf->Save(fullLinkName, TRUE);
                     ppf->Release();
                 }
                 psl->Release();
@@ -412,13 +404,17 @@ GridHubApplication::Create(const Descriptor& descriptor, const StartupParameters
     {
         bool isError = false;
 #ifdef AZ_PLATFORM_WINDOWS
-        TCHAR originalExeFileName[MAX_PATH];
-        if (GetModuleFileName(NULL, originalExeFileName, AZ_ARRAY_SIZE(originalExeFileName)))
+        char originalExeFileName[MAX_PATH];
+        if (AZ::Utils::GetExecutablePath(originalExeFileName, AZ_ARRAY_SIZE(originalExeFileName)).m_pathStored == AZ::Utils::ExecutablePathResult::Success)
         {
-            PathRemoveFileSpec(originalExeFileName);
-            PathAppend(originalExeFileName, GRIDHUB_IMAGE_NAME);
+            wchar_t originalExeFileNameW[MAX_PATH];
+            AZStd::to_wstring(originalExeFileNameW, MAX_PATH, originalExeFileName, MAX_PATH);
+            PathRemoveFileSpec(originalExeFileNameW);
+            PathAppend(originalExeFileNameW, GRIDHUB_IMAGE_NAME);
 
-            m_originalExeFileName = originalExeFileName;
+            AZStd::string finalExeFileName;
+            AZStd::to_string(finalExeFileName, originalExeFileNameW);
+            m_originalExeFileName = finalExeFileName.c_str();
 
             m_originalExeLastModified = QFileInfo(m_originalExeFileName).lastModified();
         }
@@ -489,18 +485,20 @@ void GridHubApplication::RegisterCoreComponents()
 void CopyAndRun(bool failSilently)
 {
 #ifdef AZ_PLATFORM_WINDOWS
-    TCHAR myFileName[MAX_PATH] = { _T(0) };
-    if (GetModuleFileName(NULL, myFileName, MAX_PATH ))
+    char myFileName[MAX_PATH] = { 0 };
+    if (AZ::Utils::GetExecutablePath(myFileName, MAX_PATH).m_pathStored == AZ::Utils::ExecutablePathResult::Success)
     {
-        TCHAR sourceProcPath[MAX_PATH] = { _T(0) };
-        TCHAR targetProcPath[MAX_PATH] = { _T(0) };
-        TCHAR procDrive[MAX_PATH] = { _T(0) };
-        TCHAR procDir[MAX_PATH] = { _T(0) };
-        TCHAR procFname[MAX_PATH] = { _T(0) };
-        TCHAR procExt[MAX_PATH] = { _T(0) };
-        _tsplitpath_s(myFileName, procDrive, procDir, procFname, procExt);
-        _tmakepath_s(sourceProcPath, procDrive, procDir, GRIDHUB_IMAGE_NAME, NULL);
-        _tmakepath_s(targetProcPath, procDrive, procDir, GRIDHUB_TSR_NAME, NULL);
+        wchar_t myFileNameW[MAX_PATH] = { 0 };
+        AZStd::to_wstring(myFileNameW, MAX_PATH, myFileName, MAX_PATH);
+        wchar_t sourceProcPath[MAX_PATH] = { 0 };
+        wchar_t targetProcPath[MAX_PATH] = { 0 };
+        wchar_t procDrive[MAX_PATH] = { 0 };
+        wchar_t procDir[MAX_PATH] = { 0 };
+        wchar_t procFname[MAX_PATH] = { 0 };
+        wchar_t procExt[MAX_PATH] = { 0 };
+        _wsplitpath_s(myFileNameW, procDrive, procDir, procFname, procExt);
+        _wmakepath_s(sourceProcPath, procDrive, procDir, GRIDHUB_IMAGE_NAME, NULL);
+        _wmakepath_s(targetProcPath, procDrive, procDir, GRIDHUB_TSR_NAME, NULL);
         if (CopyFileEx(sourceProcPath, targetProcPath, NULL, NULL, NULL, 0))
         {
             STARTUPINFO si;
@@ -527,9 +525,9 @@ void CopyAndRun(bool failSilently)
         {
             if (!failSilently)
             {
-                TCHAR errorMsg[1024] = { _T(0) };
-                _stprintf_s(errorMsg, _T("Failed to copy GridHub. Make sure that %s%s is writable!"), procFname, procExt);
-                MessageBox(NULL, errorMsg, NULL, MB_ICONSTOP|MB_OK);
+                wchar_t errorMsg[1024] = { 0 };
+                swprintf_s(errorMsg, L"Failed to copy GridHub. Make sure that %s%s is writable!", procFname, procExt);
+                MessageBoxW(NULL, errorMsg, NULL, MB_ICONSTOP|MB_OK);
             }
         }
     }
@@ -565,16 +563,18 @@ void CopyAndRun(bool failSilently)
 void RelaunchImage()
 {
 #ifdef AZ_PLATFORM_WINDOWS
-    TCHAR myFileName[MAX_PATH] = { _T(0) };
-    if (GetModuleFileName(NULL, myFileName, MAX_PATH))
+    char myFileName[MAX_PATH] = { 0 };
+    if (AZ::Utils::GetExecutablePath(myFileName, MAX_PATH).m_pathStored == AZ::Utils::ExecutablePathResult::Success)
     {
-        TCHAR targetProcPath[MAX_PATH] = { _T(0) };
-        TCHAR procDrive[MAX_PATH] = { _T(0) };
-        TCHAR procDir[MAX_PATH] = { _T(0) };
-        TCHAR procFname[MAX_PATH] = { _T(0) };
-        TCHAR procExt[MAX_PATH] = { _T(0) };
-        _tsplitpath_s(myFileName, procDrive, procDir, procFname, procExt);
-        _tmakepath_s(targetProcPath, procDrive, procDir, GRIDHUB_IMAGE_NAME, NULL);
+        wchar_t myFileNameW[MAX_PATH] = { 0 };
+        AZStd::to_wstring(myFileNameW, MAX_PATH, myFileName, MAX_PATH);
+        wchar_t targetProcPath[MAX_PATH] = { 0 };
+        wchar_t procDrive[MAX_PATH] = { 0 };
+        wchar_t procDir[MAX_PATH] = { 0 };
+        wchar_t procFname[MAX_PATH] = { 0 };
+        wchar_t procExt[MAX_PATH] = { 0 };
+        _wsplitpath_s(myFileNameW, procDrive, procDir, procFname, procExt);
+        _wmakepath_s(targetProcPath, procDrive, procDir, GRIDHUB_IMAGE_NAME, NULL);
 
         STARTUPINFO si;
         PROCESS_INFORMATION pi;
@@ -635,8 +635,8 @@ int main(int argc, char *argv[])
     {
 
 #ifdef AZ_PLATFORM_WINDOWS
-        TCHAR exeFileName[MAX_PATH];
-        if( GetModuleFileName(NULL,exeFileName,AZ_ARRAY_SIZE(exeFileName)) )
+        char exeFileName[MAX_PATH];
+        if (AZ::Utils::GetExecutablePath(exeFileName, AZ_ARRAY_SIZE(exeFileName)).m_pathStored == AZ::Utils::ExecutablePathResult::Success)
 #elif defined AZ_PLATFORM_LINUX
         //KDAB_TODO
         char exeFileName[MAXPATHLEN];
@@ -661,7 +661,7 @@ int main(int argc, char *argv[])
         {
 #ifdef AZ_PLATFORM_WINDOWS
             // Create a OS named mutex while the OS is running
-            HANDLE hInstanceMutex = CreateMutex(NULL,TRUE,"Global\\GridHub-Instance");
+            HANDLE hInstanceMutex = CreateMutex(NULL, TRUE, L"Global\\GridHub-Instance");
             AZ_Assert(hInstanceMutex!=NULL,"Failed to create OS mutex [GridHub-Instance]\n");
             if( hInstanceMutex != NULL && GetLastError() == ERROR_ALREADY_EXISTS)
             {
diff --git a/Gems/Atom/Feature/Common/Code/Source/LuxCore/LuxCoreRenderer.cpp b/Gems/Atom/Feature/Common/Code/Source/LuxCore/LuxCoreRenderer.cpp
index 40fcbc7f31..c753079d5b 100644
--- a/Gems/Atom/Feature/Common/Code/Source/LuxCore/LuxCoreRenderer.cpp
+++ b/Gems/Atom/Feature/Common/Code/Source/LuxCore/LuxCoreRenderer.cpp
@@ -19,7 +19,7 @@
 
 namespace LuxCoreUI
 {
-    void LaunchLuxCoreUI(const AZStd::string& luxCoreExeFullPath, AZStd::string& commandLine);
+    void LaunchLuxCoreUI(const AZStd::string& luxCoreExeFullPath, const AZStd::string& commandLine);
 }
 
 namespace AZ
diff --git a/Gems/Atom/Feature/Common/Code/Source/Platform/Windows/LaunchLuxCoreUI_Windows.cpp b/Gems/Atom/Feature/Common/Code/Source/Platform/Windows/LaunchLuxCoreUI_Windows.cpp
index 3c8f304cb6..7f15949201 100644
--- a/Gems/Atom/Feature/Common/Code/Source/Platform/Windows/LaunchLuxCoreUI_Windows.cpp
+++ b/Gems/Atom/Feature/Common/Code/Source/Platform/Windows/LaunchLuxCoreUI_Windows.cpp
@@ -7,11 +7,12 @@
  */
 
 #include <AzCore/std/string/string.h>
+#include <AzCore/std/string/conversions.h>
 #include <AzCore/PlatformIncl.h>
 
 namespace LuxCoreUI
 {
-    void LaunchLuxCoreUI(const AZStd::string& luxCoreExeFullPath, AZStd::string& commandLine)
+    void LaunchLuxCoreUI(const AZStd::string& luxCoreExeFullPath, const AZStd::string& commandLine)
     {
         STARTUPINFO si;
         PROCESS_INFORMATION pi;
@@ -20,9 +21,14 @@ namespace LuxCoreUI
         si.cb = sizeof(si);
         ZeroMemory(&pi, sizeof(pi));
 
+        AZStd::wstring luxCoreExeFullPathW;
+        AZStd::to_wstring(luxCoreExeFullPathW, luxCoreExeFullPath.c_str());
+        AZStd::wstring commandLineW;
+        AZStd::to_wstring(commandLineW, commandLine.c_str());
+
         // start the program up
-        CreateProcess(luxCoreExeFullPath.data(),   // the path
-            commandLine.data(),        // Command line
+        CreateProcessW(luxCoreExeFullPathW.c_str(),   // the path
+            commandLineW.data(),        // Command line
             NULL,           // Process handle not inheritable
             NULL,           // Thread handle not inheritable
             FALSE,          // Set handle inheritance to FALSE
diff --git a/Gems/Atom/RHI/DX12/Code/Source/Platform/Windows/RHI/PhysicalDevice_Windows.cpp b/Gems/Atom/RHI/DX12/Code/Source/Platform/Windows/RHI/PhysicalDevice_Windows.cpp
index 6e5206fc00..2c56a860e8 100644
--- a/Gems/Atom/RHI/DX12/Code/Source/Platform/Windows/RHI/PhysicalDevice_Windows.cpp
+++ b/Gems/Atom/RHI/DX12/Code/Source/Platform/Windows/RHI/PhysicalDevice_Windows.cpp
@@ -78,7 +78,7 @@ namespace AZ
             }
 
             constexpr uint32_t SubKeyLength = 256;
-            char subKeyName[SubKeyLength];
+            wchar_t subKeyName[SubKeyLength];
 
             uint32_t driverVersion = 0;
 
diff --git a/Gems/Atom/RHI/DX12/Code/Source/Platform/Windows/RHI/WindowsVersionQuery.cpp b/Gems/Atom/RHI/DX12/Code/Source/Platform/Windows/RHI/WindowsVersionQuery.cpp
index 0301d48454..91f0a712dd 100644
--- a/Gems/Atom/RHI/DX12/Code/Source/Platform/Windows/RHI/WindowsVersionQuery.cpp
+++ b/Gems/Atom/RHI/DX12/Code/Source/Platform/Windows/RHI/WindowsVersionQuery.cpp
@@ -18,7 +18,7 @@ namespace AZ
             bool GetWindowsVersionFromSystemDLL(WindowsVersion* windowsVersion)
             {
                 // We get the file version of one of the system DLLs to get the OS version.
-                constexpr const char* dllName = "Kernel32.dll";
+                constexpr const wchar_t* dllName = L"Kernel32.dll";
                 VS_FIXEDFILEINFO* fileInfo = nullptr;
                 DWORD handle;
                 DWORD infoSize = GetFileVersionInfoSize(dllName, &handle);
@@ -28,7 +28,7 @@ namespace AZ
                     if (GetFileVersionInfo(dllName, handle, infoSize, versionData.data()) != 0)
                     {
                         UINT len;
-                        const char* subBlock = "\\";
+                        const wchar_t* subBlock = L"\\";
                         if (VerQueryValue(versionData.data(), subBlock, reinterpret_cast<LPVOID*>(&fileInfo), &len) != 0)
                         {
                             windowsVersion->m_majorVersion = HIWORD(fileInfo->dwProductVersionMS);
diff --git a/Gems/Atom/RHI/DX12/Code/Source/RHI/Fence.cpp b/Gems/Atom/RHI/DX12/Code/Source/RHI/Fence.cpp
index db15930c01..f61aa3f67f 100644
--- a/Gems/Atom/RHI/DX12/Code/Source/RHI/Fence.cpp
+++ b/Gems/Atom/RHI/DX12/Code/Source/RHI/Fence.cpp
@@ -13,9 +13,13 @@ namespace AZ
     namespace DX12
     {
         FenceEvent::FenceEvent(const char* name)
-            : m_EventHandle(CreateEvent(nullptr, false, false, name))
+            : m_EventHandle(nullptr)
             , m_name(name)
-        {}
+        {
+            AZStd::wstring nameW;
+            AZStd::to_wstring(nameW, name);
+            m_EventHandle = CreateEvent(nullptr, false, false, nameW.c_str());
+        }
 
         FenceEvent::~FenceEvent()
         {
diff --git a/Gems/CrashReporting/Code/CMakeLists.txt b/Gems/CrashReporting/Code/CMakeLists.txt
index 37224ea1aa..b12b5d8944 100644
--- a/Gems/CrashReporting/Code/CMakeLists.txt
+++ b/Gems/CrashReporting/Code/CMakeLists.txt
@@ -28,6 +28,7 @@ ly_add_target(
     BUILD_DEPENDENCIES
         PRIVATE
             AZ::CrashHandler
+            AZ::AzCore
 )
 
 # Load the "Gem::CrashReporting" module in Clients and Servers
diff --git a/Gems/EMotionFX/Code/Tests/AnimGraphCopyPasteTests.cpp b/Gems/EMotionFX/Code/Tests/AnimGraphCopyPasteTests.cpp
index eb16a1a57c..4feb8cd86a 100644
--- a/Gems/EMotionFX/Code/Tests/AnimGraphCopyPasteTests.cpp
+++ b/Gems/EMotionFX/Code/Tests/AnimGraphCopyPasteTests.cpp
@@ -159,7 +159,7 @@ namespace EMotionFX
                     (azrtti_typeid<>(conditionPrototype) != azrtti_typeid<AnimGraphTransitionCondition>()))
                 {
                     AZ::TypeId type = azrtti_typeid<>(conditionPrototype);
-                    OutputDebugString(AZStd::string::format("Condition: Name=%s, Type=%s\n", conditionPrototype->GetPaletteName(), type.ToString<AZStd::string>().c_str()).c_str());
+                    AZ::Debug::Platform::OutputToDebugger(nullptr, AZStd::string::format("Condition: Name=%s, Type=%s\n", conditionPrototype->GetPaletteName(), type.ToString<AZStd::string>().c_str()).c_str());
                     result.emplace_back(azrtti_typeid<>(conditionPrototype));
                 }
             }
diff --git a/Gems/Maestro/Code/Source/Cinematics/Movie.cpp b/Gems/Maestro/Code/Source/Cinematics/Movie.cpp
index 2d5aa7b410..a6d9e47eb1 100644
--- a/Gems/Maestro/Code/Source/Cinematics/Movie.cpp
+++ b/Gems/Maestro/Code/Source/Cinematics/Movie.cpp
@@ -1963,7 +1963,7 @@ void CLightAnimWrapper::InvalidateAllNodes()
 
 CLightAnimWrapper* CLightAnimWrapper::FindLightAnim(const char* name)
 {
-    LightAnimWrapperCache::const_iterator it = ms_lightAnimWrapperCache.find(CONST_TEMP_STRING(name));
+    LightAnimWrapperCache::const_iterator it = ms_lightAnimWrapperCache.find(name);
     return it != ms_lightAnimWrapperCache.end() ? (*it).second : 0;
 }
 
@@ -1976,7 +1976,7 @@ void CLightAnimWrapper::CacheLightAnim(const char* name, CLightAnimWrapper* p)
 //////////////////////////////////////////////////////////////////////////
 void CLightAnimWrapper::RemoveCachedLightAnim(const char* name)
 {
-    ms_lightAnimWrapperCache.erase(CONST_TEMP_STRING(name));
+    ms_lightAnimWrapperCache.erase(name);
 }
 
 #ifdef MOVIESYSTEM_SUPPORT_EDITING
diff --git a/Gems/Maestro/Code/Source/Cinematics/Movie.h b/Gems/Maestro/Code/Source/Cinematics/Movie.h
index cb97cfc40b..6ac857d652 100644
--- a/Gems/Maestro/Code/Source/Cinematics/Movie.h
+++ b/Gems/Maestro/Code/Source/Cinematics/Movie.h
@@ -48,7 +48,7 @@ public:
     static void InvalidateAllNodes();
 
 private:
-    typedef std::map<string, CLightAnimWrapper*> LightAnimWrapperCache;
+    typedef std::map<AZStd::string, CLightAnimWrapper*> LightAnimWrapperCache;
     static StaticInstance<LightAnimWrapperCache> ms_lightAnimWrapperCache;
     static AZStd::intrusive_ptr<IAnimSequence> ms_pLightAnimSet;
 
diff --git a/Gems/SaveData/Code/Source/Platform/Windows/SaveData_SystemComponent_Windows.cpp b/Gems/SaveData/Code/Source/Platform/Windows/SaveData_SystemComponent_Windows.cpp
index 236b2f525c..2e473cfea7 100644
--- a/Gems/SaveData/Code/Source/Platform/Windows/SaveData_SystemComponent_Windows.cpp
+++ b/Gems/SaveData/Code/Source/Platform/Windows/SaveData_SystemComponent_Windows.cpp
@@ -10,6 +10,7 @@
 
 #include <AzCore/IO/SystemFile.h>
 #include <AzCore/std/string/conversions.h>
+#include <AzCore/Utils/Utils.h>
 
 #include <AzCore/PlatformIncl.h>
 #include <shlobj.h>
@@ -99,7 +100,7 @@ namespace SaveData
     AZStd::string GetExecutableName()
     {
         char moduleFileName[AZ_MAX_PATH_LEN];
-        GetModuleFileNameA(nullptr, moduleFileName, AZ_MAX_PATH_LEN);
+        AZ::Utils::GetExecutablePath(moduleFileName, AZ_MAX_PATH_LEN);
 
         const AZStd::string moduleFileNameString(moduleFileName);
         const size_t executableNameStart = moduleFileNameString.find_last_of('\\') + 1;