diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimAsyncOperation.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimAsyncOperation.cs
index e5f31f385f..023bf652b1 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimAsyncOperation.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimAsyncOperation.cs
@@ -344,16 +344,14 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
         /// <returns></returns>
         protected object GetBaseObject(object value)
         {
-            PSObject psObject = value as PSObject;
-            if (psObject == null)
+            if (value is not PSObject psObject)
             {
                 return value;
             }
             else
             {
                 object baseObject = psObject.BaseObject;
-                var arrayObject = baseObject as object[];
-                if (arrayObject == null)
+                if (baseObject is not object[] arrayObject)
                 {
                     return baseObject;
                 }
@@ -380,8 +378,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
         /// <returns>The object.</returns>
         protected object GetReferenceOrReferenceArrayObject(object value, ref CimType referenceType)
         {
-            PSReference cimReference = value as PSReference;
-            if (cimReference != null)
+            if (value is PSReference cimReference)
             {
                 object baseObject = GetBaseObject(cimReference.Value);
                 if (!(baseObject is CimInstance cimInstance))
@@ -394,8 +391,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
             }
             else
             {
-                object[] cimReferenceArray = value as object[];
-                if (cimReferenceArray == null)
+                if (value is not object[] cimReferenceArray)
                 {
                     return null;
                 }
diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimGetInstance.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimGetInstance.cs
index 2540051440..371b06d935 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimGetInstance.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimGetInstance.cs
@@ -284,8 +284,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
         internal static bool IsClassNameQuerySet(CimBaseCommand cmdlet)
         {
             DebugHelper.WriteLogEx();
-            GetCimInstanceCommand cmd = cmdlet as GetCimInstanceCommand;
-            if (cmd != null)
+            if (cmdlet is GetCimInstanceCommand cmd)
             {
                 if (cmd.QueryDialect != null || cmd.SelectProperties != null || cmd.Filter != null)
                 {
@@ -299,8 +298,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
         protected static string CreateQuery(CimBaseCommand cmdlet)
         {
             DebugHelper.WriteLogEx();
-            GetCimInstanceCommand cmd = cmdlet as GetCimInstanceCommand;
-            if (cmd != null)
+            if (cmdlet is GetCimInstanceCommand cmd)
             {
                 StringBuilder propertyList = new();
                 if (cmd.SelectProperties == null)
diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimIndicationWatcher.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimIndicationWatcher.cs
index cb5cfc2705..eb69ba6739 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimIndicationWatcher.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimIndicationWatcher.cs
@@ -221,14 +221,11 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
             if (temp != null)
             {
                 // raise the event
-                CimSubscriptionResultEventArgs resultArgs = args as CimSubscriptionResultEventArgs;
-                if (resultArgs != null)
+                if (args is CimSubscriptionResultEventArgs resultArgs)
                     temp(this, new CimIndicationEventInstanceEventArgs(resultArgs.Result));
-                else
+                else if (args is CimSubscriptionExceptionEventArgs exceptionArgs)
                 {
-                    CimSubscriptionExceptionEventArgs exceptionArgs = args as CimSubscriptionExceptionEventArgs;
-                    if (exceptionArgs != null)
-                        temp(this, new CimIndicationEventExceptionEventArgs(exceptionArgs.Exception));
+                    temp(this, new CimIndicationEventExceptionEventArgs(exceptionArgs.Exception));
                 }
             }
         }
diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimNewCimInstance.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimNewCimInstance.cs
index 176cb1828e..beb3e551d3 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimNewCimInstance.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimNewCimInstance.cs
@@ -179,8 +179,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
         {
             DebugHelper.WriteLogEx();
 
-            CimNewCimInstanceContext newCimInstanceContext = context as CimNewCimInstanceContext;
-            if (newCimInstanceContext == null)
+            if (context is not CimNewCimInstanceContext newCimInstanceContext)
             {
                 DebugHelper.WriteLog("Invalid (null) CimNewCimInstanceContext", 1);
                 return;
@@ -295,8 +294,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
 
                 DebugHelper.WriteLog("Create and add new property to ciminstance: name = {0}; value = {1}; flags = {2}", 5, propertyName, propertyValue, flag);
 
-                PSReference cimReference = propertyValue as PSReference;
-                if (cimReference != null)
+                if (propertyValue is PSReference cimReference)
                 {
                     CimProperty newProperty = CimProperty.Create(propertyName, GetBaseObject(cimReference.Value), CimType.Reference, flag);
                     cimInstance.CimInstanceProperties.Add(newProperty);
diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimRegisterCimIndication.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimRegisterCimIndication.cs
index c08fa0c44e..692a5f123e 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimRegisterCimIndication.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimRegisterCimIndication.cs
@@ -196,8 +196,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
             }
 
             // NOTES: should move after this.Disposed, but need to log the exception
-            CimWriteError cimWriteError = actionArgs.Action as CimWriteError;
-            if (cimWriteError != null)
+            if (actionArgs.Action is CimWriteError cimWriteError)
             {
                 this.Exception = cimWriteError.Exception;
                 if (!this.ackedEvent.IsSet)
@@ -219,11 +218,9 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
                 DebugHelper.WriteLog("Got an exception: {0}", 2, Exception);
             }
 
-            CimWriteResultObject cimWriteResultObject = actionArgs.Action as CimWriteResultObject;
-            if (cimWriteResultObject != null)
+            if (actionArgs.Action is CimWriteResultObject cimWriteResultObject)
             {
-                CimSubscriptionResult result = cimWriteResultObject.Result as CimSubscriptionResult;
-                if (result != null)
+                if (cimWriteResultObject.Result is CimSubscriptionResult result)
                 {
                     EventHandler<CimSubscriptionEventArgs> temp = this.OnNewSubscriptionResult;
                     if (temp != null)
diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimResultObserver.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimResultObserver.cs
index c27c7493dd..389c45c831 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimResultObserver.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimResultObserver.cs
@@ -419,8 +419,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
 
             string resultObjectPSType = null;
             PSObject resultObject = null;
-            CimMethodResult methodResult = value as CimMethodResult;
-            if (methodResult != null)
+            if (value is CimMethodResult methodResult)
             {
                 resultObjectPSType = PSTypeCimMethodResult;
                 resultObject = new PSObject();
@@ -431,8 +430,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
             }
             else
             {
-                CimMethodStreamedResult methodStreamedResult = value as CimMethodStreamedResult;
-                if (methodStreamedResult != null)
+                if (value is CimMethodStreamedResult methodStreamedResult)
                 {
                     resultObjectPSType = PSTypeCimMethodStreamedResult;
                     resultObject = new PSObject();
diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimWriteError.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimWriteError.cs
index d3ae3419fa..f1ebe91160 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/CimWriteError.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/CimWriteError.cs
@@ -39,14 +39,12 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
         {
             Debug.Assert(inner != null, "Caller should verify inner != null");
 
-            CimException cimException = inner as CimException;
-            if (cimException != null)
+            if (inner is CimException cimException)
             {
                 return CreateFromCimException(context, cimException, cimResultContext);
             }
 
-            var containsErrorRecord = inner as IContainsErrorRecord;
-            if (containsErrorRecord != null)
+            if (inner is IContainsErrorRecord containsErrorRecord)
             {
                 return InitializeErrorRecord(context,
                     exception: inner,
diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/CmdletOperation.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/CmdletOperation.cs
index 03db6967ae..bd1a275162 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/CmdletOperation.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/CmdletOperation.cs
@@ -232,8 +232,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
 
             if (sendToPipeline is CimInstance)
             {
-                CimSetCimInstanceContext setContext = context as CimSetCimInstanceContext;
-                if (setContext != null)
+                if (context is CimSetCimInstanceContext setContext)
                 {
                     if (string.Equals(setContext.ParameterSetName, CimBaseCommand.QueryComputerSet, StringComparison.OrdinalIgnoreCase) ||
                         string.Equals(setContext.ParameterSetName, CimBaseCommand.QuerySessionSet, StringComparison.OrdinalIgnoreCase))
diff --git a/src/Microsoft.Management.Infrastructure.CimCmdlets/NewCimSessionCommand.cs b/src/Microsoft.Management.Infrastructure.CimCmdlets/NewCimSessionCommand.cs
index f048a22a9f..56ce967b42 100644
--- a/src/Microsoft.Management.Infrastructure.CimCmdlets/NewCimSessionCommand.cs
+++ b/src/Microsoft.Management.Infrastructure.CimCmdlets/NewCimSessionCommand.cs
@@ -234,8 +234,7 @@ namespace Microsoft.Management.Infrastructure.CimCmdlets
             outputCredential = null;
             if (options != null)
             {
-                DComSessionOptions dcomOptions = options as DComSessionOptions;
-                if (dcomOptions != null)
+                if (options is DComSessionOptions dcomOptions)
                 {
                     bool conflict = false;
                     string parameterName = string.Empty;