The article provides a comprehensive guide on using Angular's built-in internationalization (i18n) module to create multi-language applications, focusing on Angular version 15. It outlines how to configure the Angular application with the localize module, perform translations, extract translations into XLF files, handle pluralization and gender information, and work with Angular pipes. The guide includes practical examples, such as adding a language switcher, creating translation files, and managing them with the Lokalise translation management system. It also covers deploying an Angular application to Firebase and configuring routing to support multiple languages. The article emphasizes the importance of internationalization for reaching a global audience and provides insights into Angular's capabilities for seamless integration of translation processes within development workflows.