An Application Programming Interface (API) is a set of instructions enabling software to communicate and integrate with other programs, facilitating tasks like data retrieval, event initiation, and third-party service connections. Widely used in mobile apps, websites, and business systems, APIs streamline development, boost productivity, and enhance user experiences by enabling seamless functionality sharing. Major providers like Google, Facebook, Amazon, and Apple offer APIs for diverse applications, from search integrations to cloud services. With a client-server-mediator architecture, APIs enable real-time data exchange, simplifying maintenance, reducing costs, and fostering innovation across platforms and devices.

An Application Programming Interface (API) is a set of instructions enabling software to communicate and integrate with other programs, facilitating tasks like data retrieval, event initiation, and third-party service connections. Widely used in mobile apps, websites, and business systems, APIs streamline development, boost productivity, and enhance user experiences by enabling seamless functionality sharing. Major providers like Google, Facebook, Amazon, and Apple offer APIs for diverse applications, from search integrations to cloud services. With a client-server-mediator architecture, APIs enable real-time data exchange, simplifying maintenance, reducing costs, and fostering innovation across platforms and devices.