N-Service Computing

Explaining Web Services, SOA and related concepts isn't always so easy. In my attempts to make these concepts easy to understand by the masses, I've landed on the term "N-Service Computing". And I'm using the following diagram to explain what I mean:



I've found that by showing this simple diagram people usually understand a few key points:
1. Service computing is an evolution of prior efforts
2. Services are the new unit of work
3. Services are part of a network

Obviously, this single slide doesn't explain everything, but I've found it to be a good introduction.