The lowest level of IT detail of relevance to the Customer. Above are the services they use, expressed in their terms. Below it is technical, for IT themselves to deal with. Wide Area Network A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more LANs. The largest WAN in existence is the Internet. Work In Progress Tasks formally identified but not yet completed. WIP reports will normally comment on the extent to which the WIP is complete and on any aspect of the WIP that changes previous assumptions about time, cost or quality.