diff --git a/dev/RuntimeCompatibilityOptions/RuntimeCompatibilityOptions.cpp b/dev/RuntimeCompatibilityOptions/RuntimeCompatibilityOptions.cpp
index 65310ff775..4d7c6b794a 100644
--- a/dev/RuntimeCompatibilityOptions/RuntimeCompatibilityOptions.cpp
+++ b/dev/RuntimeCompatibilityOptions/RuntimeCompatibilityOptions.cpp
@@ -6,6 +6,7 @@
 #include "Microsoft.Windows.ApplicationModel.WindowsAppRuntime.RuntimeCompatibilityOptions.g.cpp"
 #include "AssemblyInfo.h"
 #include <FrameworkUdk/Containment.h>
+#include "RuntimeCompatibilityOptions_TraceLogger.h"
 
 namespace winrt::Microsoft::Windows::ApplicationModel::WindowsAppRuntime::implementation
 {
@@ -16,6 +17,14 @@ namespace winrt::Microsoft::Windows::ApplicationModel::WindowsAppRuntime::implem
 
     void RuntimeCompatibilityOptions::Apply()
     {
+        std::wstring patchLevel1Str = std::to_wstring(m_patchLevel1.Major) + L"." +
+                                    std::to_wstring(m_patchLevel1.Minor) + L"." +
+                                    std::to_wstring(m_patchLevel1.Patch);
+        std::wstring patchLevel2Str = std::to_wstring(m_patchLevel2.Major) + L"." +
+                                    std::to_wstring(m_patchLevel2.Minor) + L"." +
+                                    std::to_wstring(m_patchLevel2.Patch);
+        RuntimeCompatibilityOptions_TraceLogger::ApplyCalled(patchLevel1Str.c_str(), patchLevel2Str.c_str());
+
         WinAppSdk::Containment::WinAppSDKRuntimeConfiguration config;
 
         // If both patch levels are set to the same major.minor version, error out if the patch versions are different.
@@ -24,6 +33,10 @@ namespace winrt::Microsoft::Windows::ApplicationModel::WindowsAppRuntime::implem
         {
             if (m_patchLevel1.Patch != m_patchLevel2.Patch)
             {
+                RuntimeCompatibilityOptions_TraceLogger::ApplyFailed(
+                    E_INVALIDARG,
+                    L"Patch levels should target different Major.Minor versions or match Patch version."
+                );
                 throw hresult_invalid_argument(L"Patch levels should target different Major.Minor versions or match Patch version.");
             }
         }
@@ -44,9 +57,10 @@ namespace winrt::Microsoft::Windows::ApplicationModel::WindowsAppRuntime::implem
         std::vector<UINT32> disabledChanges;
         for (auto changeId : m_disabledChanges)
         {
-            // TODO: Telemetry!  Log the changeId that was disabled.
             // UINT32 is used internally for the changeId, so cast from the enum's Int32 to that.
-            disabledChanges.push_back(static_cast<UINT32>(changeId));
+            auto id = static_cast<UINT32>(changeId);
+            RuntimeCompatibilityOptions_TraceLogger::ChangeDisabled(id);
+            disabledChanges.push_back(id);
         }
         config.disabledChanges = disabledChanges.data();
         config.disabledChangesCount = static_cast<UINT32>(disabledChanges.size());
@@ -56,8 +70,17 @@ namespace winrt::Microsoft::Windows::ApplicationModel::WindowsAppRuntime::implem
         {
             if (hr == E_ILLEGAL_STATE_CHANGE)
             {
+                RuntimeCompatibilityOptions_TraceLogger::ApplyFailed(
+                    hr,
+                    L"Configuration already set or locked."
+                );
                 throw winrt::hresult_illegal_state_change(L"Configuration already set or locked.");
             }
+
+            RuntimeCompatibilityOptions_TraceLogger::ApplyFailed(
+                hr,
+                L"SetConfiguration failed."
+            );
             winrt::throw_hresult(hr);
         }
     }
diff --git a/dev/RuntimeCompatibilityOptions/RuntimeCompatibilityOptions_TraceLogger.h b/dev/RuntimeCompatibilityOptions/RuntimeCompatibilityOptions_TraceLogger.h
new file mode 100644
index 0000000000..742389332e
--- /dev/null
+++ b/dev/RuntimeCompatibilityOptions/RuntimeCompatibilityOptions_TraceLogger.h
@@ -0,0 +1,38 @@
+// Copyright (c) Microsoft Corporation and Contributors.
+// Licensed under the MIT License.
+
+#pragma once
+
+#include "pch.h"
+#include <../WindowsAppRuntime_Insights/WindowsAppRuntimeInsights.h>
+
+class RuntimeCompatibilityOptions_TraceLogger final : public wil::TraceLoggingProvider
+{
+    IMPLEMENT_TRACELOGGING_CLASS(
+        RuntimeCompatibilityOptions_TraceLogger,
+        "Microsoft.WindowsAppRuntime.RuntimeCompatibilityOptions",
+        // {1741c54b-ba96-4540-867b-29830307d0cc}
+        (0x1741c54b, 0xba96, 0x4540, 0x86, 0x7b, 0x29, 0x83, 0x03, 0x07, 0xd0, 0xcc));
+
+public:
+
+    DEFINE_COMPLIANT_CRITICAL_DATA_EVENT_PARAM1(
+        ChangeDisabled,
+        PDT_ProductAndServicePerformance,
+        UINT32, changeId
+    );
+
+    DEFINE_COMPLIANT_CRITICAL_DATA_EVENT_PARAM2(
+        ApplyCalled,
+        PDT_ProductAndServicePerformance,
+        PCWSTR, patchLevel1,
+        PCWSTR, patchLevel2
+    );
+
+    DEFINE_COMPLIANT_CRITICAL_DATA_EVENT_PARAM2(
+        ApplyFailed,
+        PDT_ProductAndServicePerformance,
+        HRESULT, hresult,
+        PCWSTR, message
+    );
+};
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