diff --git a/apps/yang/src/main/java/org/onosproject/yang/impl/YangRuntimeManager.java b/apps/yang/src/main/java/org/onosproject/yang/impl/YangRuntimeManager.java
new file mode 100644
index 0000000..5d9a076
--- /dev/null
+++ b/apps/yang/src/main/java/org/onosproject/yang/impl/YangRuntimeManager.java
@@ -0,0 +1,196 @@
+/*
+ * Copyright 2017-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.onosproject.yang.impl;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.core.CoreService;
+import org.onosproject.yang.YangClassLoaderRegistry;
+import org.onosproject.yang.model.ModelConverter;
+import org.onosproject.yang.model.ModelObjectData;
+import org.onosproject.yang.model.NodeKey;
+import org.onosproject.yang.model.ResourceData;
+import org.onosproject.yang.model.ResourceId;
+import org.onosproject.yang.model.RpcContext;
+import org.onosproject.yang.model.SchemaContext;
+import org.onosproject.yang.model.SchemaContextProvider;
+import org.onosproject.yang.model.YangModel;
+import org.onosproject.yang.model.YangModule;
+import org.onosproject.yang.model.YangModuleId;
+import org.onosproject.yang.runtime.CompositeData;
+import org.onosproject.yang.runtime.CompositeStream;
+import org.onosproject.yang.runtime.ModelRegistrationParam;
+import org.onosproject.yang.runtime.RuntimeContext;
+import org.onosproject.yang.runtime.YangModelRegistry;
+import org.onosproject.yang.runtime.YangRuntimeService;
+import org.onosproject.yang.runtime.YangSerializer;
+import org.onosproject.yang.runtime.YangSerializerRegistry;
+import org.onosproject.yang.runtime.impl.DefaultModelConverter;
+import org.onosproject.yang.runtime.impl.DefaultSchemaContextProvider;
+import org.onosproject.yang.runtime.impl.DefaultYangModelRegistry;
+import org.onosproject.yang.runtime.impl.DefaultYangRuntimeHandler;
+import org.onosproject.yang.runtime.impl.DefaultYangSerializerRegistry;
+import org.onosproject.yang.serializers.json.JsonSerializer;
+import org.onosproject.yang.serializers.xml.XmlSerializer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Represents implementation of YANG runtime manager.
+ */
+@Service
+@Component(immediate = true)
+public class YangRuntimeManager implements YangModelRegistry,
+        YangSerializerRegistry, YangRuntimeService, ModelConverter,
+        SchemaContextProvider, YangClassLoaderRegistry {
+
+    private static final String APP_ID = "org.onosproject.yang";
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CoreService coreService;
+
+    private DefaultYangModelRegistry modelRegistry;
+    private DefaultYangSerializerRegistry serializerRegistry;
+    private DefaultYangRuntimeHandler runtimeService;
+    private DefaultModelConverter modelConverter;
+    private DefaultSchemaContextProvider schemaContextProvider;
+
+    private Map<String, ClassLoader> classLoaders;
+
+    @Activate
+    public void activate() {
+        coreService.registerApplication(APP_ID);
+        serializerRegistry = new DefaultYangSerializerRegistry();
+        modelRegistry = new DefaultYangModelRegistry();
+        runtimeService = new DefaultYangRuntimeHandler(serializerRegistry, modelRegistry);
+        schemaContextProvider = new DefaultSchemaContextProvider(modelRegistry);
+        serializerRegistry.registerSerializer(new JsonSerializer());
+        serializerRegistry.registerSerializer(new XmlSerializer());
+        modelConverter = new DefaultModelConverter(modelRegistry);
+        classLoaders = new ConcurrentHashMap<>();
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        log.info("Stopped");
+    }
+
+
+    @Override
+    public void registerModel(ModelRegistrationParam p) {
+        modelRegistry.registerModel(p);
+    }
+
+    @Override
+    public void unregisterModel(ModelRegistrationParam p) {
+        modelRegistry.unregisterModel(p);
+    }
+
+    @Override
+    public Set<YangModel> getModels() {
+        return modelRegistry.getModels();
+    }
+
+    @Override
+    public YangModel getModel(String s) {
+        return modelRegistry.getModel(s);
+    }
+
+    @Override
+    public YangModule getModule(YangModuleId yangModuleId) {
+        return modelRegistry.getModule(yangModuleId);
+    }
+
+    @Override
+    public void registerSerializer(YangSerializer ys) {
+        serializerRegistry.registerSerializer(ys);
+    }
+
+    @Override
+    public void unregisterSerializer(YangSerializer ys) {
+        serializerRegistry.unregisterSerializer(ys);
+    }
+
+    @Override
+    public Set<YangSerializer> getSerializers() {
+        return serializerRegistry.getSerializers();
+    }
+
+    @Override
+    public CompositeData decode(CompositeStream cs, RuntimeContext rc) {
+        return runtimeService.decode(cs, rc);
+    }
+
+    @Override
+    public CompositeStream encode(CompositeData cd, RuntimeContext rc) {
+        return runtimeService.encode(cd, rc);
+    }
+
+    @Override
+    public ModelObjectData createModel(ResourceData resourceData) {
+        return modelConverter.createModel(resourceData);
+    }
+
+    @Override
+    public ResourceData createDataNode(ModelObjectData modelObjectData) {
+        return modelConverter.createDataNode(modelObjectData);
+    }
+
+    @Override
+    public SchemaContext getSchemaContext(ResourceId resourceId) {
+        checkNotNull(resourceId, " resource id can't be null.");
+        NodeKey key = resourceId.nodeKeys().get(0);
+        if (resourceId.nodeKeys().size() == 1 &&
+                "/".equals(key.schemaId().name())) {
+            return modelRegistry;
+        }
+        log.info("To be implemented.");
+        return null;
+    }
+
+    @Override
+    public RpcContext getRpcContext(ResourceId resourceId) {
+        return schemaContextProvider.getRpcContext(resourceId);
+    }
+
+    @Override
+    public ClassLoader getClassLoader(String modelId) {
+        return classLoaders.get(modelId);
+    }
+
+    @Override
+    public void registerClassLoader(String modelId, ClassLoader classLoader) {
+        classLoaders.put(modelId, classLoader);
+    }
+
+    @Override
+    public void unregisterClassLoader(String modelId) {
+        classLoaders.remove(modelId);
+    }
+}