The concept of synergy is that when the output of some units can be used as inputs to other units, or two organizations can pool markets and expertise, these relationships lower costs and generate profits. In applying synergy to situations, information systems are used to tie together the operations of disparate business units so that they can act as a whole.
A core competency is an activity for which a firm is a world-class leader. In general, a core competency relies on knowledge that is gained over many years of experience and a first-class research organization or simply key people who stay abreast of new external knowledge. Any information system that encourages the sharing of knowledge across business units enhances competency.