diff --git a/global-attributes.yml b/global-attributes.yml
index fc2ed0e86..948d77091 100644
--- a/global-attributes.yml
+++ b/global-attributes.yml
@@ -12,6 +12,13 @@
     # Only embed named opengraph images in docs-ui via src/partials/head-meta-opengraph.hbs sourced from docs/overlay
     page-component-build-list: 'docs, docs-main, ocis, server, webui, desktop, android, ios-app, branding'
 #   common
+    # canonical product names - single source of truth to prevent naming drift.
+    # the legacy server product is "ownCloud Classic" (append a version only where
+    # relevant, e.g. {oc-classic-name} 10); the next-generation product is
+    # "ownCloud Infinite Scale" / "oCIS" and must never be renamed.
+    oc-classic-name: 'ownCloud Classic'
+    oc-ocis-name: 'ownCloud Infinite Scale'
+    oc-ocis-name-short: 'oCIS'
     docs-base-url: 'https://doc.owncloud.com'
     oc-complete-base-url: 'https://download.owncloud.com/server/stable'
     oc-contact-url: 'https://owncloud.com/contact/'