The Vonage API offers an Automatic Speech Recognition (ASR) feature that enables developers to build voice interactions into their applications, such as simple IVRs with voice navigation, sophisticated voice bots, and assistants. This feature allows for fast customer service, speech-based self-serve operations, a superior user experience, and reduced operational costs. To demonstrate this, the article provides a step-by-step guide on building a simple IVR app using Node.js, Express, and the Vonage API. The code snippet shows how to implement the answer webhook, which activates speech recognition, and how to decide what action to take based on the ASR results. The article concludes by providing testing instructions and encouraging readers to learn more about the new Speech Recognition feature, as well as other resources and tutorials.