The principal liaison between the information systems groups and the rest of the organization is a(n): .

System analyst.

Explanation:

The principal liaison between the information systems groups and the rest of the organization is a system analyst. Simply stated, a system analyst is an individual who controls or supervises the information systems and relays information to other departments in an organization.

Information system can be defined as a set of components or computer systems, which is used to collect, store, and process data, as well as dissemination of information, knowledge, and distribution of digital products.

Basically, it is an essential part of an organization or business firm because they typically rely on information systems in order to perform their duties, functions or tasks and to manage their operations effectively. For example, all organizations make use of information systems for supply chain management, to process financial accounts, manage their workforce, and as a marketing channel to reach their customers or potential customers.

Additionally, an information system comprises of five (5) main components; hardware, software, database, human resources and telecommunications.