JSON (JavaScript Object Notation) is a lightweight, text-based data format used for data interchange between systems. It is easy for humans to read and write, and simple for machines to parse and generate, making it a widely adopted standard for structuring and exchanging data. JSON represents data as key-value pairs and supports hierarchical structures like arrays and nested objects, allowing it to handle complex data models effectively. Originally derived from JavaScript, JSON is now language-independent and supported by most modern programming languages, enabling seamless integration across diverse systems and platforms.
JSON is commonly used in web APIs and microservices for transmitting data between clients (e.g., browsers, mobile apps) and servers. Its lightweight nature makes it ideal for applications requiring fast data exchange, such as AJAX requests, RESTful APIs, and real-time communication systems. JSON also supports data serialization, allowing objects in one programming language to be converted into JSON format and then reconstructed in another language, ensuring interoperability. Its simplicity and versatility have made it a cornerstone of modern web development, replacing older formats like XML for many use cases.