WSO2 has released an ebook “Making Good SOA Great – The WSO2 Story of Componentization” explaining how componentizations of middleware will improve the adaption of SOA in an enterprise IT system. And it introduces how you implement it in real systems using WSO2 carbon, the introducing WSO2 product of componentized SOA middleware.
You can see the presentation introducing WSO2 carbon from here,
Introduction to WSO2 Carbon – Componentized SOA Platform.