What is JSON commonly used for in web applications?

JSON, which stands for JavaScript Object Notation, is primarily utilized for transmitting data in web applications. It serves as a lightweight data interchange format that is easy for both humans to read and write, as well as for machines to parse and generate. In the context of web applications, JSON is often used to communicate data between a client and a server, making it an essential component for APIs (Application Programming Interfaces) and AJAX (Asynchronous JavaScript and XML) calls.

For example, when a user interacts with a web application, data such as user input or request parameters may be serialized into JSON format and sent to the server. The server processes this data and often responds with data formatted in JSON, which can then be easily consumed by the client's front-end JavaScript code. This process allows for dynamic web applications that can update content without the need to reload the entire page.

The other options do not accurately represent the primary use of JSON. While images can be referenced in a JSON object, JSON itself is not used for storing image files. JSON does not inherently provide mechanisms for encrypting data; encryption typically involves additional algorithms and protocols. Lastly, while JSON can be used to transmit data related to maps, such as coordinates or configuration settings,