Lots of the stuff I read about SOA talks about what a service should be, how it should be charged for and how it should be governed. These are all very important aspects but are for the birds without a decent platform that allows these to be combined into applications.
Following 3 days camping this was brought into sharp focus. The site we were staying on had all the “services” that I have at home. We had empty_bladder_into_sewer, heat_food, covered_sleeping and we had additional services such as get_sun_tan, get_ice_cream and get_wine.
However the composition platform (in this case me) just wasn’t able to invoke these services as easily as it could at home. Trying to get empty_bladder_into_sewer to work with covered_sleeping was very hard to achieve, especially when combined with get_wine :-)
My main point here is that just having all the services was not enough without a composition platform that was able to take account of the non-functional requirements and make them appear to work as one.
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