The Alexa Skills Kit (ASK) is a collection of tools and resources that developers use to create voice-driven applications, known as "skills," for the Amazon Alexa voice assistant. These skills enable users to interact with Alexa through voice commands, allowing for a wide range of functionalities, from playing music to controlling smart home devices. ASK provides a set of APIs, software development kits (SDKs), and documentation to help developers build and publish their skills. By using ASK, developers can enhance the user experience and expand the capabilities of Alexa, making it a more versatile and useful tool for everyday tasks.