SOA Design Patterns - need for agnostic implementation

[Don Schaefer]

Looking at the contents and info for Jeff's book on the manning site, it lists a number of open source projects that can solve parts of a SOA stack. Very kewl. Many folks assume that open source == standards based. This is not always true. My question is this:

How will a collection of open source implementation move me towards a more platform agnostic solution? The book "SOA design patterns" by Thomas Erl re-enforces this goal again and again.

As an aside, I think that this is a very difficult task to attain. The code base by the use of abstraction and interface has a chance at meeting part of this goal but the enterprise processes (monitoring, security, set up tear down, configuration, etc) have a near impossible task...

Thanks,
Don.