What is defined as the electronic exchange of information between two data points?

The concept defined as the electronic exchange of information between two data points is best described by data transmission. This term specifically refers to the process of sending and receiving data across a network, which can occur through various methods such as wired or wireless communication. Data transmission involves the transfer of information in the form of signals, whether it's through a physical medium like cables or over the air.

In an increasingly interconnected digital landscape, understanding data transmission is crucial as it underpins many aspects of communication and transaction processes in payment systems. It is the fundamental mechanism that enables devices, systems, and applications to share information efficiently and accurately.

The other terms, while related to data handling and movement, do not represent the specific act of exchanging data between points. Data transport generally refers to the methods and pathways used to carry data, data retrieval involves accessing stored data, and data management encompasses the administrative processes related to handling data within an organization. Each of these plays a role in the broader context of information technology but focuses on different aspects compared to the direct act of data transmission.