In software a module is a part of a program, and programs are composed of one or more independently developed modules that are not combined until the program is linked.
ERP (Enterprise Resource Planning) software typically consists of multiple enterprise software modules that are individually purchased, based on what best meets the specific needs and technical capabilities of the organization.
Each ERP module is focused on one area of business processes, such as product development or marketing. Some of the more common ERP modules include those for product planning, material purchasing, inventory control, distribution, accounting, marketing, finance and HR.
Learn more about ERP modules in the main Webopedia Enterprise Resource Planning definition.