In the larger schema of things, SOA would espouse general, more abstract concepts of software reusability and encapsulation within certain boundaries (as to then provide access to that software via defined interfaces), Web services would then make these SOA concepts vendor-independent due to their use of generally accepted standards, while BPM and BPEL would be some of the engines making the whole system work.
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AmberPoint . Web services networks, which provide infrastructure for Web service transactions outside of the firewall, from the likes of Allidex , Flamenco Networks (now part of Digital Evolution ), and Grand Central Communications . Business process integration, which includes process modeling, loosely-coupled Web services-based integration, and web services messaging platforms, from the likes of Black Pearl , Juice Software , MetaMatrix , OmniHub , Sonic Software , Fiorano , IONA , Q-Link , Red Oak