diff --git a/ops/ansible/inventories/legislation.demo.openfisca.org.yml b/ops/ansible/inventories/legislation.demo.openfisca.org.yml
new file mode 100644
index 00000000..3d036da2
--- /dev/null
+++ b/ops/ansible/inventories/legislation.demo.openfisca.org.yml
@@ -0,0 +1,28 @@
+all:
+  hosts:
+    vps-60ea1664.openfisca.org:
+      ansible_user: root
+
+      api_url: https://api.demo.openfisca.org/latest
+      app_port: 8101
+
+      ui_strings: |
+        {
+          "en":
+            { "countryName": "Demo", "search_placeholder": "salary, disposable income" },
+          "fr":
+            { "countryName": "Demo", "search_placeholder": "salary, disposable income" }
+        }
+
+      matomo_url: https://stats.data.gouv.fr/piwik.php
+      matomo_site_id: 4
+
+      source_dir: legislation-explorer-demo # relative to the home directory
+      systemd_service_file_name: legislation-explorer-demo.service
+
+      # Reverse proxy
+
+      host_name: legislation.demo.openfisca.org
+
+      letsencrypt_email: contact@openfisca.org
+      letsencrypt_environment: production
diff --git a/ops/ansible/inventories/legislation.fr.openfisca.org.yml b/ops/ansible/inventories/legislation.fr.openfisca.org.yml
index dad62c77..02f81f64 100644
--- a/ops/ansible/inventories/legislation.fr.openfisca.org.yml
+++ b/ops/ansible/inventories/legislation.fr.openfisca.org.yml
@@ -3,13 +3,26 @@ all:
     vps-60ea1664.openfisca.org:
       ansible_user: root
 
-      host_name: legislation.fr.openfisca.org
+      api_url: https://api.fr.openfisca.org/latest
       app_port: 8100
 
-      api_url: https://api.fr.openfisca.org/latest
-
-      letsencrypt_email: contact@openfisca.org
-      letsencrypt_environment: production
+      ui_strings: |
+        {
+          "en":
+            { "countryName": "France", "search_placeholder": "smic, salaire net" },
+          "fr":
+            { "countryName": "France", "search_placeholder": "smic, salaire net" }
+        }
 
       matomo_url: https://stats.data.gouv.fr/piwik.php
       matomo_site_id: 4
+
+      source_dir: legislation-explorer-fr # relative to the home directory
+      systemd_service_file_name: legislation-explorer-fr.service
+
+      # Reverse proxy
+
+      host_name: legislation.fr.openfisca.org
+
+      letsencrypt_email: contact@openfisca.org
+      letsencrypt_environment: production
diff --git a/ops/ansible/roles/legislation_explorer/defaults/main.yml b/ops/ansible/roles/legislation_explorer/defaults/main.yml
index 190c5dee..f23d5eae 100644
--- a/ops/ansible/roles/legislation_explorer/defaults/main.yml
+++ b/ops/ansible/roles/legislation_explorer/defaults/main.yml
@@ -1,20 +1,22 @@
 api_url: http://localhost:8000
 app_host: 127.0.0.1
 app_port: 8001
-base_path: /
 changelog_url: https://github.com/openfisca/openfisca-france/blob/master/CHANGELOG.md
-host_name: localhost
 ui_strings: |
   {
     "en":
-      { "countryName": "France", "search_placeholder": "smic, salaire net" },
+      { "countryName": "Demo", "search_placeholder": "salary, disposable income" },
     "fr":
-      { "countryName": "France", "search_placeholder": "smic, salaire net" }
+      { "countryName": "Demo", "search_placeholder": "salary, disposable income" }
   }
 
 repo_url: https://github.com/openfisca/legislation-explorer.git
 branch: master
 
+# Reverse proxy
+host_name: localhost
+base_path: /
+
 # Optional: SSL certificate
 # An SSL certificate is issued from Let's Encrypt if `letsencrypt_email` is defined.
 letsencrypt_email: null
@@ -26,7 +28,7 @@ matomo_url: null
 matomo_site_id: null
 
 # Fully managed by Ansible, you should not need to edit this unless you have a naming collision
-source_dir: "/home/{{ unix_user_name }}/legislation-explorer"
-systemd_service_file: /etc/systemd/system/legislation-explorer.service
+source_dir: legislation-explorer # relative to the home directory
+systemd_service_file_name: legislation-explorer.service
 unix_group_name: openfisca
 unix_user_name: legislation-explorer
diff --git a/ops/ansible/roles/legislation_explorer/tasks/main.yml b/ops/ansible/roles/legislation_explorer/tasks/main.yml
index b10b48ae..633c1647 100644
--- a/ops/ansible/roles/legislation_explorer/tasks/main.yml
+++ b/ops/ansible/roles/legislation_explorer/tasks/main.yml
@@ -30,45 +30,49 @@
     shell: /bin/bash
   register: unix_user
 
+- name: Define the path of the source directory
+  ansible.builtin.set_fact:
+    source_dir_path: "{{ unix_user.home }}/{{ source_dir }}"
+
 - name: Clone the Git repository of Legislation Explorer
   ansible.builtin.git:
     # Discard any local changes otherwise the task will fail.
     # Sometimes the package-lock.json is modified due to changes in its structure.
     force: yes
     repo: "{{ repo_url }}"
-    dest: "{{ source_dir }}"
+    dest: "{{ source_dir_path }}"
     version: "{{ branch }}"
   become_user: "{{ unix_user_name }}"
 
 - name: Install npm dependencies
   ansible.builtin.npm:
-    path: "{{ source_dir }}"
+    path: "{{ source_dir_path }}"
     production: yes
     state: present
 
 - name: Copy the environment file for Legislation Explorer
   ansible.builtin.template:
     src: systemd/legislation-explorer.env.j2
-    dest: "{{ source_dir }}/.env"
+    dest: "{{ source_dir_path }}/.env"
 
 - name: Build the application
   ansible.builtin.command: npm run build
   args:
-    chdir: "{{ source_dir }}"
+    chdir: "{{ source_dir_path }}"
 
 - name: Set up the systemd service
   block:
     - name: Copy the systemd service file
       ansible.builtin.template:
         src: systemd/legislation-explorer.service.j2
-        dest: "{{ systemd_service_file }}"
+        dest: "/etc/systemd/system/{{ systemd_service_file_name }}"
 
     - name: Enable and start the systemd service
       ansible.builtin.systemd:
         daemon_reload: yes
         enabled: yes
         state: restarted
-        name: legislation-explorer
+        name: "{{ systemd_service_file_name }}"
 
 - name: Check that Legislation Explorer is actually started
   ansible.builtin.uri:
@@ -105,16 +109,10 @@
         state: present
         update_cache: no
 
-    - name: Handle staging environment
+    - name: Use Let's Encrypt staging environment
       when: letsencrypt_environment == "staging"
-      block:
-        - name: Display message when staging environment is used
-          ansible.builtin.debug:
-            msg: Let's Encrypt staging environment will be used
-
-        - name: Define certbot --staging option
-          ansible.builtin.set_fact:
-            certbot_staging_option: "--staging"
+      ansible.builtin.set_fact:
+        certbot_staging_option: "--staging"
 
     - name: Reinstall or renew an SSL certificate from Let's Encrypt using the certbot client
       ansible.builtin.command: >
diff --git a/ops/ansible/roles/legislation_explorer/templates/systemd/legislation-explorer.service.j2 b/ops/ansible/roles/legislation_explorer/templates/systemd/legislation-explorer.service.j2
index 67004995..80d695ad 100644
--- a/ops/ansible/roles/legislation_explorer/templates/systemd/legislation-explorer.service.j2
+++ b/ops/ansible/roles/legislation_explorer/templates/systemd/legislation-explorer.service.j2
@@ -3,7 +3,7 @@ Description=OpenFisca Legislation Explorer
 
 [Service]
 ExecStart=/usr/bin/npm start
-WorkingDirectory={{ source_dir | quote }}
+WorkingDirectory={{ source_dir_path | quote }}
 User={{ unix_user_name }}
 Group={{ unix_group_name }}