Multilanguage support

Multilanguage support enables software to adapt to global markets through internationalization (i18n) and localization (l10n) frameworks.

Modern multilanguage support relies on Unicode (UTF-8) standards and specialized libraries like i18next or ICU to manage dynamic content translation. By decoupling UI strings from source code using JSON or Gettext files, developers can deploy a single codebase that serves users in 100+ languages. This architecture handles complex regional requirements including right-to-left (RTL) scripts for Arabic, pluralization rules for Slavic languages, and locale-specific date formats (ISO 8601). Implementing these patterns early reduces technical debt and expands a product's Total Addressable Market (TAM) by making it accessible to non-English speakers globally.

https://developer.mozilla.org/en-US/docs/Mozilla/Localization/Internationalization_and_localization