JSON stands for JavaScript Object Notation, a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate. It structures data in a key-value pair format, which is crucial for various applications in financial technology.In the context of blockchain and digital currencies, JSON is commonly used for APIs (Application Programming Interfaces). APIs connect different software systems, allowing them to communicate and share data effectively. For instance, a cryptocurrency exchange might use JSON to send transaction details, account balances, or market data to a trading application.Additionally, many wallets and decentralized applications utilize JSON to format requests and responses. This streamlines interactions, making it simpler for developers to build and integrate various functionalities.Overall, JSON plays a vital role in ensuring smooth data exchange, promoting interoperability between different platforms and services in the cryptocurrency space.