diff --git a/src/Bundle/ChillCalendarBundle/ChillCalendarBundle.php b/src/Bundle/ChillCalendarBundle/ChillCalendarBundle.php
index 11b985224..2e398afe7 100644
--- a/src/Bundle/ChillCalendarBundle/ChillCalendarBundle.php
+++ b/src/Bundle/ChillCalendarBundle/ChillCalendarBundle.php
@@ -11,8 +11,16 @@ declare(strict_types=1);
 
 namespace Chill\CalendarBundle;
 
+use Chill\CalendarBundle\Synchro\DependencyInjection\SynchroCompilerPass;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
 
 class ChillCalendarBundle extends Bundle
 {
+    public function build(ContainerBuilder $container)
+    {
+        parent::build($container);
+
+        $container->addCompilerPass(new SynchroCompilerPass());
+    }
 }
diff --git a/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php b/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
index 3efae86e9..9af9ad1df 100644
--- a/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
+++ b/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
@@ -14,6 +14,7 @@ namespace Chill\CalendarBundle\Controller;
 use Chill\CalendarBundle\Entity\Calendar;
 use Chill\CalendarBundle\Form\CalendarType;
 use Chill\CalendarBundle\Repository\CalendarRepository;
+use Chill\CalendarBundle\Synchro\Connector\RemoteCalendarConnectorInterface;
 use Chill\MainBundle\Entity\User;
 use Chill\MainBundle\Pagination\PaginatorFactory;
 use Chill\MainBundle\Security\Authorization\AuthorizationHelper;
@@ -47,20 +48,24 @@ class CalendarController extends AbstractController
 
     private CalendarRepository $calendarRepository;
 
+    private RemoteCalendarConnectorInterface $remoteCalendarConnector;
+
     public function __construct(
-        EventDispatcherInterface $eventDispatcher,
         AuthorizationHelper $authorizationHelper,
+        CalendarRepository $calendarRepository,
+        EventDispatcherInterface $eventDispatcher,
         LoggerInterface $logger,
-        SerializerInterface $serializer,
         PaginatorFactory $paginator,
-        CalendarRepository $calendarRepository
+        RemoteCalendarConnectorInterface $remoteCalendarConnector,
+        SerializerInterface $serializer
     ) {
-        $this->eventDispatcher = $eventDispatcher;
         $this->authorizationHelper = $authorizationHelper;
-        $this->logger = $logger;
-        $this->serializer = $serializer;
-        $this->paginator = $paginator;
         $this->calendarRepository = $calendarRepository;
+        $this->eventDispatcher = $eventDispatcher;
+        $this->logger = $logger;
+        $this->paginator = $paginator;
+        $this->remoteCalendarConnector = $remoteCalendarConnector;
+        $this->serializer = $serializer;
     }
 
     /**
@@ -183,27 +188,6 @@ class CalendarController extends AbstractController
         ]);
     }
 
-    /**
-     * @Route("/{_locale}/calendar/calendar/my", name="chill_calendar_calendar_list_my")
-     *
-     * @param Request $request
-     * @return Response
-     */
-    public function myCalendar(Request $request): Response
-    {
-        $this->denyAccessUnlessGranted('ROLE_USER');
-
-        if (!$this->getUser() instanceof User) {
-            throw new UnauthorizedHttpException('you are not an user');
-        }
-
-        $view = '@ChillCalendar/Calendar/listByUser.html.twig';
-
-        return $this->render($view, [
-            'user' => $this->getUser(),
-        ]);
-    }
-
     /**
      * Lists all Calendar entities.
      *
@@ -251,6 +235,28 @@ class CalendarController extends AbstractController
         throw new Exception('Unable to list actions.');
     }
 
+    /**
+     * @Route("/{_locale}/calendar/calendar/my", name="chill_calendar_calendar_list_my")
+     */
+    public function myCalendar(Request $request): Response
+    {
+        $this->denyAccessUnlessGranted('ROLE_USER');
+
+        if (!$this->getUser() instanceof User) {
+            throw new UnauthorizedHttpException('you are not an user');
+        }
+
+        if (!$this->remoteCalendarConnector->isReady()) {
+            return $this->remoteCalendarConnector->getMakeReadyResponse();
+        }
+
+        $view = '@ChillCalendar/Calendar/listByUser.html.twig';
+
+        return $this->render($view, [
+            'user' => $this->getUser(),
+        ]);
+    }
+
     /**
      * Create a new calendar item.
      *
diff --git a/src/Bundle/ChillCalendarBundle/DependencyInjection/ChillCalendarExtension.php b/src/Bundle/ChillCalendarBundle/DependencyInjection/ChillCalendarExtension.php
index d0a5c3d94..d0bb84167 100644
--- a/src/Bundle/ChillCalendarBundle/DependencyInjection/ChillCalendarExtension.php
+++ b/src/Bundle/ChillCalendarBundle/DependencyInjection/ChillCalendarExtension.php
@@ -36,6 +36,7 @@ class ChillCalendarExtension extends Extension implements PrependExtensionInterf
         $loader->load('services/fixtures.yml');
         $loader->load('services/form.yml');
         $loader->load('services/event.yml');
+        $loader->load('services/synchro.yaml');
     }
 
     public function prepend(ContainerBuilder $container)
diff --git a/src/Bundle/ChillCalendarBundle/Resources/config/services/synchro.yaml b/src/Bundle/ChillCalendarBundle/Resources/config/services/synchro.yaml
new file mode 100644
index 000000000..7be6ccbec
--- /dev/null
+++ b/src/Bundle/ChillCalendarBundle/Resources/config/services/synchro.yaml
@@ -0,0 +1,8 @@
+services:
+    _defaults:
+        autoconfigure: true
+        autowire: true
+
+    Chill\CalendarBundle\Synchro\Connector\RemoteCalendarConnectorInterface: ~
+
+    Chill\CalendarBundle\Synchro\Connector\NullRemoteCalendarConnector: ~
diff --git a/src/Bundle/ChillCalendarBundle/Synchro/Connector/NullRemoteCalendarConnector.php b/src/Bundle/ChillCalendarBundle/Synchro/Connector/NullRemoteCalendarConnector.php
new file mode 100644
index 000000000..3eb415e5d
--- /dev/null
+++ b/src/Bundle/ChillCalendarBundle/Synchro/Connector/NullRemoteCalendarConnector.php
@@ -0,0 +1,28 @@
+<?php
+
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Chill\CalendarBundle\Synchro\Connector;
+
+use LogicException;
+use Symfony\Component\HttpFoundation\Response;
+
+class NullRemoteCalendarConnector implements RemoteCalendarConnectorInterface
+{
+    public function getMakeReadyResponse(): Response
+    {
+        throw new LogicException('As this connector is always ready, this method should not be called');
+    }
+
+    public function isReady(): bool
+    {
+        return true;
+    }
+}
diff --git a/src/Bundle/ChillCalendarBundle/Synchro/Connector/RemoteCalendarConnectorInterface.php b/src/Bundle/ChillCalendarBundle/Synchro/Connector/RemoteCalendarConnectorInterface.php
new file mode 100644
index 000000000..a0d5a3a19
--- /dev/null
+++ b/src/Bundle/ChillCalendarBundle/Synchro/Connector/RemoteCalendarConnectorInterface.php
@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Chill\CalendarBundle\Synchro\Connector;
+
+use Symfony\Component\HttpFoundation\Response;
+
+interface RemoteCalendarConnectorInterface
+{
+    /**
+     * Return a response, more probably a RedirectResponse, where the user
+     * will be able to fullfill requirements to prepare this connector and
+     * make it ready.
+     */
+    public function getMakeReadyResponse(): Response;
+
+    /**
+     * Return true if the connector is ready to act as a proxy for reading
+     * remote calendars.
+     */
+    public function isReady(): bool;
+}
diff --git a/src/Bundle/ChillCalendarBundle/Synchro/DependencyInjection/SynchroCompilerPass.php b/src/Bundle/ChillCalendarBundle/Synchro/DependencyInjection/SynchroCompilerPass.php
new file mode 100644
index 000000000..37b70285a
--- /dev/null
+++ b/src/Bundle/ChillCalendarBundle/Synchro/DependencyInjection/SynchroCompilerPass.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Chill\CalendarBundle\Synchro\DependencyInjection;
+
+use Chill\CalendarBundle\Synchro\Connector\NullRemoteCalendarConnector;
+use Chill\CalendarBundle\Synchro\Connector\RemoteCalendarConnectorInterface;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+class SynchroCompilerPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        $nullConnector = $container->getDefinition(NullRemoteCalendarConnector::class);
+        $nullConnector->setDecoratedService(RemoteCalendarConnectorInterface::class);
+    }
+}