>Nick Malik has a very interesting post about Solution Domain Architecture (SDA) which I believe is a great addition to the endless list of methods for Service Engineering. I especially like his teory that service reuse is most likely to happen with " 'top down' services that we know, in advance, that we are going to need. " and any reuse of bottom up services is "is a happy accident". This really highlights the need for SOA-governance in order to have a high degree of reuse of services in your service oriented architecture.