|The IBM WebSphere DataPower SOA Appliance Handbook is a new book by people in my department, IBM Software Services for WebSphere, and technical sales, so real experts on the products. It's available from standard bookstores like Amazon and on-line from Safari. The IBM Press page has a link to a sample chapter.|
The book covers the DataPower products (announcement, background), network appliances with software built in that you just plug into your network, configure, and get ESB-style SOA connectivity.
IBM WebSphere DataPower SOA Appliance Handbook begins by introducing the rationale for SOA appliances and explaining how DataPower appliances work from network, security, and Enterprise Service Bus perspectives. Next, the authors walk through DataPower installation and configuration; then they present deep detail on DataPower’s role and use as a network device. Using many real-world examples, the authors systematically introduce the services available on DataPower devices, especially the "big three": XML Firewall, Web Service Proxy, and Multi-Protocol Gateway. They also present thorough and practical guidance on day-to-day DataPower management, including, monitoring, configuration build and deploy techniques.
The book is 960 pages long, so it should answer any questions you may have and then some.
So if you'd like to learn more, check out the book.