Web development with C# refers to the process of using the C# programming language to create dynamic and interactive web applications. C# is a popular programming language developed by Microsoft and is widely used for building web applications on the .NET framework.

In web development with C#, developers can use various frameworks and tools to build web applications. Some of the commonly used frameworks in C# web development include ASP.NET, ASP.NET MVC, and ASP.NET Core. These frameworks provide a structure and set of tools for building web applications, including support for routing, views, models, and database integration.

C# web development also often involves the use of HTML, CSS, and JavaScript to create the user interface and add interactivity to the web applications. Developers can use Razor syntax (a templating language) to combine C# code with HTML to generate dynamic web pages.

To deploy and run C# web applications, a web server is required. Microsoft Internet Information Services (IIS) is a popular web server that can host C# web applications, but other web servers like Apache can also be used with the help of modules and configurations.

Additionally, C# web development often involves working with databases to store and retrieve data. Developers can use Object-Relational Mapping (ORM) frameworks like Entity Framework to simplify database interactions and improve productivity.

Overall, web development with C# offers a powerful and flexible environment for building web applications, leveraging the features and capabilities of the C# programming language and the .NET framework.