Why json file is used?

JSON files are used because they provide a simple, human-readable format for storing and exchanging structured data. Configuration files in JSON format are easy for both humans and programs to read and modify. Package managers like npm and modern build tools use JSON files (package.json) to manage project metadata and dependencies. JSON files serve as lightweight databases for small applications and prototyping, storing data without requiring database setup. They are ideal for API responses, allowing web services to transmit structured data efficiently. JSON files facilitate data exchange between different programming languages and platforms due to universal parser support. Developers use JSON for mock data, test fixtures, and application state storage. The format's simplicity and widespread adoption make JSON files the standard choice for configuration and data storage in modern software development.