diff --git a/data/hostname/webapp0.softwareheritage.org.yaml b/data/hostname/webapp0.softwareheritage.org.yaml
--- a/data/hostname/webapp0.softwareheritage.org.yaml
+++ b/data/hostname/webapp0.softwareheritage.org.yaml
@@ -8,3 +8,16 @@
 apache::default_vhost: false
 
 swh::remote_service::search::config: "%{alias('swh::remote_service::search::config::storage0')}"
+
+swh::remote_service::storage::config:
+  cls: cassandra
+  args:
+    hosts:
+      - cassandra01.euwest.azure.internal.softwareheritage.org
+      - cassandra02.euwest.azure.internal.softwareheritage.org
+      - cassandra03.euwest.azure.internal.softwareheritage.org
+      - cassandra04.euwest.azure.internal.softwareheritage.org
+      - cassandra05.euwest.azure.internal.softwareheritage.org
+      - cassandra06.euwest.azure.internal.softwareheritage.org
+    keyspace: swh_test
+    objstorage: "%{alias('swh::remote_service::objstorage::config::azure_readonly_with_fallback')}"
diff --git a/site-modules/profile/manifests/swh/deploy/webapp.pp b/site-modules/profile/manifests/swh/deploy/webapp.pp
--- a/site-modules/profile/manifests/swh/deploy/webapp.pp
+++ b/site-modules/profile/manifests/swh/deploy/webapp.pp
@@ -102,6 +102,14 @@
     notify  => Service['gunicorn-swh-webapp'],
   }
 
+  $storage_cfg = $full_webapp_config['storage']
+  if $storage_cfg['cls'] == 'cassandra' {
+    package {'python-cassandra':
+      ensure  => present,
+      require => Apt::Source['softwareheritage'],
+    }
+  }
+
   file {$production_db_dir:
     ensure => directory,
     owner  => $user,