Duolingo, a popular language learning platform, has experienced rapid growth due to its innovative business strategy. By offering free language courses supported by ads and paid features, Duolingo has been able to attract a large user base. The platform's user-friendly interface and gamified learning approach make language learning engaging and accessible to people worldwide. Duolingo's strategic partnerships with schools and organizations have further expanded its reach and impact. With a strong emphasis on continuous improvement and customer feedback, Duolingo has successfully retained users and maintained its position as a leading language learning platform in the market.