Hosting

✅ ActivityPub works on these (Shared-)Hosting environments:

• WordPress.com: https://wordpress.com/social-web/
• Uberspace: https://uberspace.de/en/
• IONOS: https://www.ionos.com/hosting/wordpress-hosting

❌ Hosters with problems:

• Siteground does not allow to add custom .well-known routes and that is required by most Fediverse platforms like for example Mastodon. See: https://wordpress.org/support/topic/not-working-on-siteground-servers/
• WP Engine blocks access to /?author= routes as a "feature" that can not be turned off. See https://wordpress.org/support/topic/activitypub-not-working/#post-18667190