diff --git a/internal/metrics/metrics.go b/internal/metrics/metrics.go
new file mode 100644
index 000000000..12686b1fa
--- /dev/null
+++ b/internal/metrics/metrics.go
@@ -0,0 +1,10 @@
+package metrics
+
+// Copyright (c) Microsoft Corporation.
+// Licensed under the Apache License 2.0.
+
+// Emitter emits different types of metrics
+type Emitter interface {
+	EmitCounter(metricName string, value float64, labels map[string]string)
+	EmitGauge(metricName string, value float64, labels map[string]string)
+}