Blazor allows you to create interactive web UIs with C# instead JavaScript. Blazor apps consist of reusable web UI components that are implemented using HTML, CSS, and C#. C# is used to write both client and server code, which allows you to share code as well as libraries. Blazor is a feature in ASP.NET, the popular web-development framework. It extends the.NET platform with tools and libraries to build web apps. Blazor allows you to run client-side C# code in your browser using WebAssembly. It's real.NET running in WebAssembly so you can reuse code and libraries from the server-side of your application. Blazor can also run your client logic on the web server. SignalR - a real time messaging framework - is used to send client UI events back to the server. After execution is complete, the required UI modifications are sent to clients and merged into DOM.