Ans. Node.js: Node.js is known for its event-driven, non-blocking I/O model, which makes it highly scalable and efficient for handling concurrent connections.
.NET: .NET supports asynchronous programming, making it capable of handling concurrent tasks effectively. With the introduction of .NET Core, it has improved its scalability and performance.
PHP: PHP traditionally follows a synchronous execution model, but it can achieve concurrency through various techniques, such as multi-threading, worker queues, or integrating with other tools.