AJAX (Asynchronous JavaScript and XML) enhances web applications by enabling seamless communication between the client and server. Key benefits include: Asynchronous Communication – Updates web pages dynamically without full reloads. Improved User Experience – Enhances interactivity by allowing actions without delays. Reduced Server Load – Transfers only necessary data, improving performance. Dynamic Content Loading – Fetches and displays data in the background for real-time updates. Server-Side Interactivity – Enables live updates, useful for chats and notifications. Supports Multiple Data Formats – Works with JSON, making data exchange lightweight. Form Validation & Submission – Provides instant feedback without reloading pages. Improved Performance – Allows background actions while users continue interacting. Integration with Modern Frameworks – Supported in jQuery, Angular, React, and more. Rich User Interfaces – Enables dynamic content updates, ideal for SPAs. Conclusion: AJAX improves responsiveness, reduces server load, and enhances user experience, making it an essential tool for modern web applications.