Make your plugin translatable from the start using __() and _e() functions with text domains. Define your text domain in plugin headers. Use load_plugin_textdomain() to load translation files. Proper text domain prevents conflicts with other plugins. Create POT files for translators using tools like Poedit. Avoid concatenating translatable strings; always pass complete strings to translation functions. Provide context for translators when needed using _x(). Community translators can add language support. Internationalization expands your plugin’s audience. Following i18n standards shows professionalism and opens global opportunities.