What is the best SEO setup for a multilingual Webflow site in SEA?

The best setup is to use Webflow's native Localization feature. It automatically handles the most critical (and difficult) parts of multilingual SEO. It creates clean URL structures using subdirectories (like yoursite.com/ms/) and automatically generates the correct hreflang tags and localized sitemaps. This tells Google exactly which language to show to which user, which is essential for ranking in different countries.