- XML Technologies (XML, XSL, XSLT, XQUERY, etc.)
- Enterprise Java Beans and Java Persistence API
- Web Services and 2nd generation Web Services
- Structured Systems Integration
* Service Oriented Architecture (SOA)
* Enterprise Service Bus (ESB)
- Middleware for Enterprise Systems
* Distributed transactions, long transactions, business activities, message-oriented middleware
- Integration of legacy systems
- Security for large-scale enterprise systems
- Reliability and fault-tolerance in enterprise systems

? Enterprise Integration Patterns: Designing, Building, and Deploying Messaging Solutions, by Gregor Hohpe & Bobby Woolf, Addison-Wesley Professional, ISBN: 0321200683
? Service-Oriented Architecture: A Field Guide to Integrating XML and Web Services, by Thomas Erl, Prentice Hall PTR, ISBN: 0131428985
? IT Architectures and Middleware: Strategies for Building Large, Integrated Systems (2nd Edition), by Chris Britton, Peter Bye
? Addison-Wesley Professional, May 2004
? Enterprise Application Integration, by David Linthicum, Addison-Wesley, ISBN 0201615835, December 1999
? Next Generation Application Integration, by D. Linthicum, Addison-Wesley, ISBN 0201844567, 2004
? Developing Java Web Services: Architecting and Developing Secure Web Services Using Java, by Ramesh Nagappan et. al., Wiley International
? XML Bible (2nd Edition), by Elliotte Rusty Harold, Wiley, 2001, ISBN 0764547607
? Blueprints for High Availability, 2nd Ed., by Evan Marcus and Hal Stern, Wiley, ISBN 0471430269, Sep/2