Re: [service-orientated-architecture] Re: What is a "well defined interface"?

[Keith Harrison-Broninski]

Eric Newcomer wrote: The most recent figures I have from the Credit Suisse case study are 1500 services enterprise wide with a reuse rate of about 70%. The reuse rate was lower when they started out - which is probably obvious enough - and 70% has been constant for a few years apparently, so we could based on this extrapolate a view of the potential max being around that. But of course the investment in reuse pays off over time. Are you able to say anything about the nature of these services, Eric?  In particular: Is each service simple to understand individually, or do you have to be au fait with a particular set of complex types developed by Credit Suisse?  In ERP, you need quite a bit of initial experience with a package to get up to speed, but can then pick up more aspects of it quickly since you know the basic concepts, types, formats, etc. Are the processes in which the services are re-used dramatically different?  Variations on a typical Credit Suisse means of business?  Or just versions of one another? Is the re-use they are gaining via SOA fundamentally different from the re-use they might have expected pre-SOA using components or just program modules rather than services? -- All the best Keith http://keith.harrison-broninski.info SPONSORED LINKS Computer software Computer aided design software Computer job Soa Service-oriented architecture YAHOO! GROUPS LINKS  Visit your group "service-orientated-architecture" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.