Azure App Service is a cloud platform provided by Microsoft Azure that allows developers to build, deploy, and manage web applications and services. It supports various programming languages, including C#, Java, Node.js, and Python, making it versatile for different development needs. The service offers features like automatic scaling, custom domains, and integrated development tools. With Azure App Service, users can easily host their applications without worrying about the underlying infrastructure. It provides built-in security, monitoring, and backup options, ensuring that applications run smoothly and securely. This makes it an ideal choice for businesses looking to streamline their web application deployment.