https://techcrunch.com/2021/05/07/extra-crunch-roundup-how-duolingo-became-an-edtech-leader/

The pandemic has just pushed edtech mainstream, but language-learning startup Duolingo had already spent the past decade figuring out how to build a successful edtech app.

In our latest installment of the EC-1 series, Natasha Mascarenhas goes deep with the company to understand how it found product-market fit, then figured out how to grow like a consumer tech startup and monetize like a SaaS startup. After a record 2020, the Pittsburgh-based company also opened up about its plans for the future, including a focus on speaking a new language (in addition to listening, reading and writing).