diff --git a/impl/src/main/java/org/opencord/olt/impl/ServiceKey.java b/impl/src/main/java/org/opencord/olt/impl/ServiceKey.java
new file mode 100644
index 0000000..c878062
--- /dev/null
+++ b/impl/src/main/java/org/opencord/olt/impl/ServiceKey.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2021-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.opencord.olt.impl;
+
+import org.opencord.sadis.UniTagInformation;
+
+import java.util.Objects;
+
+/**
+ * SubscriberKey is used to identify the combination of a subscriber and a service.
+ */
+public class ServiceKey {
+    private AccessDevicePort port;
+    private UniTagInformation service;
+
+    public ServiceKey(AccessDevicePort port, UniTagInformation service) {
+        this.port = port;
+        this.service = service;
+    }
+
+    public AccessDevicePort getPort() {
+        return port;
+    }
+
+    public void setPort(AccessDevicePort port) {
+        this.port = port;
+    }
+
+    public UniTagInformation getService() {
+        return service;
+    }
+
+    public void setService(UniTagInformation service) {
+        this.service = service;
+    }
+
+    @Override
+    public String toString() {
+        return this.port.toString() + " - " + this.service.getServiceName();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ServiceKey that = (ServiceKey) o;
+        boolean isPortEqual = Objects.equals(port, that.port);
+        boolean isServiceEqual = Objects.equals(service, that.service);
+
+        return isPortEqual && isServiceEqual;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(port, service);
+    }
+}