Node.js is suitable for real-time applications because it uses an event-driven architecture, allowing it to handle multiple connections simultaneously, providing fast data exchange and seamless user experiences.

Real-time applications have become increasingly popular in today's digital landscape, and Node.js is a standout choice for building these types of applications. Here’s a comprehensive look at why Node.js is particularly suited for real-time applications:

1. Event-Driven Architecture: Node.js operates on an event-driven architecture that allows it to respond to events as they occur. This architecture is essential for real-time applications, where timely data exchange is crucial. For instance, in a chat application, users expect instant updates when a new message is received. Node.js can efficiently handle these events, providing users with real-time feedback and updates.

2. Non-blocking I/O: The non-blocking I/O model of Node.js enables it to handle multiple connections concurrently. This feature is particularly beneficial for real-time applications that require constant communication between the client and server. By using non-blocking operations, Node.js ensures that one slow operation does not prevent the processing of other requests, resulting in a smooth user experience even under heavy load.

3. WebSocket Support: Node.js offers native support for WebSockets, which allows for two-way communication between clients and servers. Unlike traditional HTTP requests, WebSockets enable persistent connections that can push data to clients in real time. This capability is crucial for applications such as online gaming, live sports updates, and collaborative tools where users expect immediate data synchronization.

4. Scalability: Real-time applications often experience fluctuating traffic levels. Node.js allows developers to build scalable applications that can handle increased loads effortlessly. With the ability to spawn multiple instances of an application and distribute requests among them, Node.js ensures that real-time applications remain responsive and efficient, even as user numbers grow.

5. Single-threaded Event Loop: The single-threaded nature of Node.js means it can handle many concurrent connections without creating new threads for each request. This is particularly advantageous for real-time applications, where maintaining many open connections is necessary. The event loop efficiently manages these connections, enabling seamless interactions without significant overhead.

6. JSON Native Support: As real-time applications often require data to be sent back and forth between the server and clients, the native support for JSON in Node.js simplifies data handling. Developers can easily send and receive JSON objects, making it easier to manage the data format that is commonly used in real-time applications.

7. Rapid Development Cycle: Node.js promotes rapid application development thanks to its extensive ecosystem of libraries and frameworks. Tools like Socket.io facilitate real-time communication in applications, allowing developers to focus on building features rather than dealing with lower-level networking issues. This rapid development cycle is especially beneficial in competitive markets where time-to-market is critical.

8. Community Support: The Node.js community is vast and active, providing numerous resources, libraries, and frameworks that can help developers create real-time applications efficiently. This community support includes documentation, forums, and tutorials that make it easier for developers to solve challenges and share best practices.

9. Cross-Platform Compatibility: Node.js applications can run on various operating systems, including Windows, macOS, and Linux. This cross-platform capability allows developers to build real-time applications that can be deployed in different environments without significant modifications. It also enables consistent development practices across teams working in diverse settings.

10. Cost-Effectiveness: Developing real-time applications with Node.js can be cost-effective. Its efficiency in handling connections and data reduces the server resources needed for hosting applications. This cost efficiency is especially important for startups and small businesses that aim to deliver high-quality applications without incurring substantial infrastructure costs.

In conclusion, Node.js's event-driven architecture, non-blocking I/O, WebSocket support, and scalability make it an excellent choice for developing real-time applications. By leveraging these features, developers can create engaging and responsive applications that meet the demands of modern users.