--- In [email protected], Gervas Douglas <[EMAIL PROTECTED]> wrote:
> Schulte: Probably the biggest disappointment is the low level of > reuse or sharing that they're getting. I had one CIO from state > government tell me, "We're getting less than 10 percent reuse." > You know, the best we ever see is 40 percent reuse. We consider > success anything between 10 and 40 percent. So many people on this forum and elsewhere have said reuse/sharing isn't the primary goal. Why is the view that SOA is *about* reuse still so prevalent? > business function cares about it. Some of these, like product data, > customer data, employee data -- these are going to be reused a lot. Ack. There's that data focus again. > Yes, you will get that, but the more universal benefit from SOA is > the modularity, the ability to swap out a module and replace it > with a new version of it. IMO, that's a variation of reuse. And I've not seen a real swap out of a meaningful component without some heavy lifting. The notion of "swap and play" is more elusive than reuse/sharing, IME. > going to have interfaces among the components. And if you're not > doing SOA, you're going to have informal, ad-hoc interfaces between > the components. That seems to be a big assumption. Approaches other than SOA are always informal and ad-hoc? Hmmm. > One of my colleagues does a presentation on SOA horror stories and > most of them are organizational. You have several different groups > doing SOA independently and they try to coordinate after the fact. > You can do it, but it's really hard. You're trying to glue together > things that weren't designed to work together, so you're into > adapters and all sorts of gateways and stuff. By then you've done > the services, so you've got customer information in five, 10, 15 > different services. So it's very hard, where if you had done it up > front, you'd be in better shape. In other words, most seem to focus on project-oriented approaches rather take an enterprise view? They do lots of invidual application or integration architectures and ignore the enterprise architecture? What are other peoples' experience here? Are you seeing lots of piecemeal work as well? -Rob
