The 21st century is the century of globalization. This also applies to IT. More and more system development is only a task in the broader approach of system landscape maintenance.
Here, SOA comes into play. To realize business processes over distributed systems you need concepts that deal with globalization. You might have heard about loose coupling, high interoperability, and service-orientation as key elements of SOA. But the real power SOA comes from dealing with the fact that systems landscapes are heterogeneous and have different owners (which means that it's far more than just applying Web-Services or discussing whether REST is the better approach).
Based on his experience of bringing SOA in operation at major world-wide companies Nicolai Josuttis will explain what SOA really is and why its concepts are so important for the next decades.