JavaScript Object Notation (JSON) 

JavaScript Object Notation (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 uses a text format that is completely language-independent, making it an ideal choice to transmit data between a server and a web application, as well as for configuration files.

Use Case

In a digital agency, JSON is frequently used to facilitate data exchange between the front-end and back-end of web applications. For instance, when a user submits a contact form on a website, the form data (including the user's name, email, and message) is collected and converted into a JSON object.

This object is then sent via an AJAX call to the server. The server processes the data, perhaps saving it to a database, and prepares a response in the form of another JSON object, which informs the user whether their submission was successful or if there was an error.

Using JSON not only simplifies the data transport process due to its lightweight nature but also allows for easy integration with various programming languages and frameworks. For example, a front-end JavaScript application can parse the JSON response, dynamically update the user interface by displaying a confirmation message without reloading the page, enhancing the overall user experience. This demonstrates JSON's critical role in modern web development, allowing seamless communication between different components of an application.