A great set of resources related to Service-Oriented Architecture (SOA). For most organizations I've seen, even knowing the very definitions would make a huge difference. :)
"Understanding SOA: Key Terms
Service: a repeatable business task, such as check customer credit or open account
Service orientation: a way of integrating your business processes as linked services, and the outcomes that these services bring
Service Oriented Architecture (SOA): an IT architectural style that supports service orientation
Composite application: a set of related and integrated services that support a business process built on SOA"