Re: [service-orientated-architecture] SOA and ESBs

[Todd Biske]

In the presentation I gave at Catalyst two weeks ago, I spoke to this.  Step one is to understand the capabilities you need in the middle.  Now the question is how to achieve these capabilities.  If your enterprise has lots of proprietary integration needs, you are likely going to need a developer-focused tool in the middle,  such as an ESB.  If your enterprise if focused on standards based integration, where the "wiring" is largely a configuration effort by operations, an XML Gateway or Web Service Broker/Intermediary will likely meet your needs.   I don't think it's a matter of internal integration versus external integration.   -tb On Jun 27, 2006, at 1:14 AM, Dennis Sosnoski wrote: Hi all, I'd like to find out how list members view the use of ESBs in SOA. Based on what I've read and discussions I've had off list, I suspect a fair number of people view an ESB as an essential component of a SOA. In my own talks on the topic I tell people that ESBs are especially good for bridging legacy applications to a SOA. Beyond this, they can certainly add a lot of value in the monitoring and control area. However, I think there's been way too much marketing hype from the vendors that conflates ESBs with SOA. Especially now that WS-Addressing, WS-ReliableMessaging, and WS-AtomicTransactions are becoming standard components of the SOAP stacks (and WS-Eventing is getting closer), the value added to Web services by an ESB seems to me to be minimal for all but the largest enterprises. The main drawback I see to using an ESB is that you're building your enterprise around proprietary software. Even the open source ESBs all have their own unique ways of configuring and managing services. The net effect is that you're locked into a particular service bus and will find it increasingly difficult to break free over time. How do other people feel about this? - Dennis -- Dennis M. Sosnoski SOA, Web Services, and XML Training and Consulting http://www.sosnoski.com - http://www.sosnoski.co.nz Seattle, WA +1-425-296-6194 - Wellington, NZ +64-4-298-6117 __._,_.___ 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. __,_._,___