In this post, the developers at Daily showcase how their WebRTC APIs can be used to build a purpose-built e-learning application. They demonstrate several features such as moderation, transcription, whiteboarding, raising hands, and polls, which are commonly found in educational contexts. The demo is built using NextJS and showcases how these features can be integrated into a virtual class application. The developers also provide guidance on how to set up the demo locally and provide links to other resources that might come in handy for an e-learning application. Additionally, they mention their fitness app as another example of building e-learning features with Daily. They encourage readers to contact them if they have any questions about building e-learning applications with Daily.