In 2020, the surge in real-time video communication was driven by major companies like Google, Microsoft, and Zoom, alongside emerging companies using Daily’s video API. As interest shifts in 2021 towards audio-only platforms, possibly due to video call fatigue, a simple audio chat application can be built using Daily’s API. The guide explains how to construct a basic audio chat room in HTML, focusing on disabling video to facilitate an audio-focused experience, and uses Daily’s video API to manage audio controls, participant updates, and event handling in real-time. The tutorial emphasizes the ease of transitioning to audio by leveraging existing video call infrastructure, and it provides a foundation for further enhancements like improved error handling and user interface, suggesting future explorations of audio-only features.