What is JSON used for?

JSON is primarily used for data exchange between web servers and clients in RESTful APIs. It serves as a configuration format for applications, storing settings in a human-readable structure. Developers use JSON for data storage in NoSQL databases like MongoDB, which store documents in JSON-like formats. Modern web applications use JSON to transmit data asynchronously without page reloads. Package managers like npm use JSON files to manage project dependencies and metadata. JSON is essential for mobile app development, enabling communication between apps and backend services. It's also used in logging systems, data serialization, and microservices architecture for inter-service communication, making it indispensable in modern software development.