Using SignalR for Real-Time Communication // Hub public class ChatHub : Hub { public async Task SendMessage(string user, string message) => await Clients.All.SendAsync("ReceiveMessage", user, message); } // Client (JavaScript) const connection = new signalR.HubConnectionBuilder() .withUrl("/chathub") .build(); connection.on("ReceiveMessage", (user, message) => { console.log(`${user}: ${message}`); }); await connection.start(); await connection.invoke("SendMessage", "Alice", "Hello!");

Short answer: Using SignalR for Real-Time Communication // Hub public class ChatHub : Hub { public async Task SendMessage(string user, string message) => await Clients.All.SendAsync("ReceiveMessage", user, message); } // Client (JavaScript) const connection = new signalR.HubConnectionBuilder() .withUrl("/chathub") .build(); connection.on("ReceiveMessage", (user, message) => { console.log(`${user}: ${message}`); }); await…

Explain a bit more

connection.start(); await connection.invoke("SendMessage", "Alice", "Hello!");

Example code

Using SignalR for Real-Time Communication // Hub public class ChatHub : Hub
{
public async Task SendMessage(string user, string message) =>
await Clients.All.SendAsync("ReceiveMessage", user, message); } // Client (JavaScript) const connection = new signalR.HubConnectionBuilder() .withUrl("/chathub") .build(); connection.on("ReceiveMessage", (user, message) => { console.log(`${user}: ${message}`); }); await connection.start();
await connection.invoke("SendMessage", "Alice", "Hello!");

Real-world example (ShopNest)

ShopNest admin screens use MVC: controller loads data, Razor view renders HTML, Tag Helpers build forms safely.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.