ASP.NET Core is a cross-platform, high-performance, free, open-source framework for building modern, cloud-based, Internet-connected applications. With ASP.NET Core, you can build web apps and services, IoT apps, and mobile backends. Use your favorite development tools on Windows, macOS, and Linux. Deploy to the cloud or on-premises while using the languages that you know: HTML and JavaScript. Leverage the ASP.NET Razor syntax to inline C# directly in your views. Use TypeScript to create typed, scalable and more manageable code that compiles into JavaScript.