diff --git a/Makefile b/Makefile
index ab7b3c96..7ccd9b80 100644
--- a/Makefile
+++ b/Makefile
@@ -16,6 +16,10 @@ test:
 go-build:
 	go build -o $(APP_NAME) main.go
 
+build-SSOSyncFunction:
+	GOOS=linux GOARCH=arm64 go build -o bootstrap main.go
+	cp ./bootstrap $(ARTIFACTS_DIR)/.
+
 .PHONY: clean
 clean:
 	rm -f $(OUTPUT) $(PACKAGED_TEMPLATE)
diff --git a/cmd/root.go b/cmd/root.go
index bb7113b3..a2911353 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -136,7 +136,7 @@ func Handler(ctx context.Context, event events.CodePipelineEvent) (string, error
 func init() {
 	// init config
 	cfg = config.New()
-	cfg.IsLambda = len(os.Getenv("_LAMBDA_SERVER_PORT")) > 0
+	cfg.IsLambda = len(os.Getenv("AWS_LAMBDA_FUNCTION_NAME")) > 0
 
 	// initialize cobra
 	cobra.OnInitialize(initConfig)
diff --git a/template.yaml b/template.yaml
index 54b53ab9..fe8b55e9 100644
--- a/template.yaml
+++ b/template.yaml
@@ -129,8 +129,10 @@ Resources:
   SSOSyncFunction:
     Type: AWS::Serverless::Function
     Properties:
-      Runtime: go1.x
-      Handler: dist/ssosync_linux_amd64_v1/ssosync
+      Runtime: provided.al2
+      Handler: bootstrap
+      Architectures:
+        - arm64
       Timeout: 300
       Environment:
         Variables:
@@ -185,6 +187,8 @@ Resources:
           Properties:
             Enabled: true
             Schedule: !Ref ScheduleExpression
+    Metadata:
+      BuildMethod: makefile
 
   AWSGoogleCredentialsSecret:
     Type: "AWS::SecretsManager::Secret"