This document discusses the multilingual capabilities in Drupal 8. It is organized around four pillars: language, interface translation, content translation, and configuration translation. Key points include built-in support for translating all entity types like nodes, terms and users; automated downloading and updating of interface translations; tracking of customized translations; and storage of language and translation overrides with configuration files. The document encourages users to get involved by visiting related websites and testing multilingual functionality on simplytest.me.