What is the relationship between JSON and web applications?

The relationship between JSON (JavaScript Object Notation) and web applications primarily revolves around its role in data transmission. JSON is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is widely used in web applications for transferring data between a server and a client—typically from a web server to a web application running in a browser and vice versa.

When a web application needs to send or receive data, such as user inputs or query results, JSON serves as the format that encapsulates this data. This format allows for structured data to be easily exchanged in a way that can be interpreted by both the client-side scripts (often JavaScript) and server-side processes (which can be in various programming languages). This streamlined process is essential for ensuring efficient communication in modern web applications, where real-time data interaction is often required.

Considering the other choices, data storage is not the primary use of JSON, as it is more involved in data exchange rather than long-term data storage solutions. Designing user interfaces is typically the domain of HTML, CSS, and frameworks but does not directly involve JSON. While JSON can be part of managing server requests (as part of the data contained in requests), its main