http://weblogs.asp.net/pgielens/archive/2005/07/22/420217.aspxJimmy makes an interesting point. The Ubiquitous Language is also extremely important in the Service context. A set of services enable several applications to work together through Messaging. The collection of messages is a Context Free Language (DataContractenCommunityServer 2007 SP1 (Build: 20510.895)