diff --git a/DependencyInjection/Factory/AmazonS3AdapterFactory.php b/DependencyInjection/Factory/AmazonS3AdapterFactory.php
new file mode 100644
index 0000000..f583d7b
--- /dev/null
+++ b/DependencyInjection/Factory/AmazonS3AdapterFactory.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace Knp\Bundle\GaufretteBundle\DependencyInjection\Factory;
+
+use Symfony\Component\Config\Definition\Builder\NodeDefinition;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\DefinitionDecorator;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+class AmazonS3AdapterFactory implements AdapterFactoryInterface
+{
+    /**
+    * Creates the adapter, registers it and returns its id
+    *
+    * @param  ContainerBuilder $container  A ContainerBuilder instance
+    * @param  string           $id         The id of the service
+    * @param  array            $config     An array of configuration
+    */
+    public function create(ContainerBuilder $container, $id, array $config)
+    {
+        $container
+            ->setDefinition($id, new DefinitionDecorator('knp_gaufrette.adapter.amazon_s3'))
+            ->addArgument(new Reference($config['amazon_s3_id']))
+            ->addArgument($config['bucket_name'])
+            ->addArgument($config['create'])
+        ;
+    }
+
+    /**
+     * Returns the key for the factory configuration
+     *
+     * @return string
+     */
+    public function getKey()
+    {
+        return 'amazon_s3';
+    }
+
+    /**
+     * Adds configuration nodes for the factory
+     *
+     * @param  NodeBuilder $builder
+     */
+    public function addConfiguration(NodeDefinition $builder)
+    {
+        $builder
+            ->children()
+                ->scalarNode('amazon_s3_id')->isRequired()->cannotBeEmpty()->end()
+                ->scalarNode('bucket_name')->isRequired()->cannotBeEmpty()->end()
+                ->booleanNode('create')->defaultFalse()->end()
+            ->end()
+        ;
+    }
+}
\ No newline at end of file
diff --git a/DependencyInjection/KnpGaufretteExtension.php b/DependencyInjection/KnpGaufretteExtension.php
index a0c7134..39e9d47 100644
--- a/DependencyInjection/KnpGaufretteExtension.php
+++ b/DependencyInjection/KnpGaufretteExtension.php
@@ -87,6 +87,7 @@ class KnpGaufretteExtension extends Extension
         ;
 
         if (!empty($config['alias'])) {
+            $container->getDefinition($id)->setPublic(false);
             $container->setAlias($config['alias'], $id);
         }
 
diff --git a/Resources/config/adapter_factories.xml b/Resources/config/adapter_factories.xml
index 415e87e..52359ca 100644
--- a/Resources/config/adapter_factories.xml
+++ b/Resources/config/adapter_factories.xml
@@ -17,6 +17,9 @@
         <service id="knp_gaufrette.adapter.factory.safe_local" class="Knp\Bundle\GaufretteBundle\DependencyInjection\Factory\SafeLocalAdapterFactory">
             <tag name="gaufrette.adapter.factory" />
         </service>
+        <service id="knp_gaufrette.adapter.factory.amazon_s3" class="Knp\Bundle\GaufretteBundle\DependencyInjection\Factory\AmazonS3AdapterFactory">
+            <tag name="gaufrette.adapter.factory" />
+        </service>
     </services>
 
 </container>
diff --git a/Resources/config/gaufrette.xml b/Resources/config/gaufrette.xml
index 886ecc8..10cc03c 100644
--- a/Resources/config/gaufrette.xml
+++ b/Resources/config/gaufrette.xml
@@ -19,6 +19,7 @@
             <argument /><!-- Directory -->
             <argument /><!-- Create -->
         </service>
+        <service id="knp_gaufrette.adapter.amazon_s3" class="Gaufrette\Adapter\AmazonS3" abstract="true" public="false" />
         <service id="knp_gaufrette.filesystem_map" class="Knp\Bundle\GaufretteBundle\FilesystemMap">
             <argument /> <!-- map of filesystems -->
         </service>