Final answer:
Gap analysis involves comparing functionality between an existing and a desired new system to identify differences or gaps.
Step-by-step explanation:
The comparison of functionality between an existing system and a desired new system is known as gap analysis.
Gap analysis involves identifying the differences or gaps in functionality, features, or performance between the two systems.
It helps to determine the specific areas where the new system needs to be improved or enhanced to meet the desired functional requirements.
For example, let's say there is an existing customer relationship management (CRM) system in an organization, and they want to upgrade to a new CRM system.
Gap analysis would involve assessing the features and functionalities of the existing system and comparing them to the desired features and functionalities of the new system.
This analysis would identify the gaps or differences in functionality and help in refining the functional requirements for the new system.