ASP.NET
ASP.NET is a free, open-source web framework developed by Microsoft for building modern web applications and services. It provides a unified model for creating web apps using .NET, supporting both server-side rendering with ASP.NET Core MVC and client-side development with Blazor. It includes features like authentication, data access, and real-time communication, and runs cross-platform on Windows, Linux, and macOS.
Developers should learn ASP.NET when building enterprise-grade web applications, RESTful APIs, or real-time web services that require high performance, scalability, and security. It is ideal for projects integrated with Microsoft ecosystems like Azure, SQL Server, or Active Directory, and is widely used in corporate environments for its robust tooling and long-term support.