RedMonk's sixth PodCast is well worth a listen.
- The increasing importance of sharing links to good content - and adding a short description. Can't disagree with that.
- A good discussion of "GreenHat" Consulting's Test Driven SOA concept. They seem rather Tibco-centric but I won't hold it against them...
- "SOA is the new spelling of CORBA". If you consider SOA only as a technology thought then I guess you could attempt to make this argument. I think there's an increasing acceptance, however, that SOA is something that the business should be interested in
- "Connectors and agents bad". I'm not so sure... I think they still have their place. For example, there is a particularly sweet spot for connectors when you need to detect events in an application that doesn't know anything about asynchronous messaging or how to make calls out to interested parties. I haven't seen a good way to do this other than with locally-deployed polling connectors. It offends one's sensibilities but it's very often the least worst option.
- "24/7 running for SOAs", "Batch driven SOA". These are interesting thoughts. At the technical level, one of the goals of an SOA is to hide details of implementation. A potential problem then arises if you can't guarantee that the service implementing the functionality is up all the time... your abstraction has leaked before you've started. There are well-tested patterns for this sort of stuff (asynchronous interactions, the use of an ESB to intermediate, etc) but it comes down to problem of service meta-data (or whatever you choose to call it): as well as documenting an interface, you need to publish its availability, performance characteristics, transaction support, etc, etc - and that should also form part of the contract
All in all, an interesting discussion.