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You may like it or not, but many of us need to process XML every once in a while. XML itself can be compared to lines on paper -- nothing special; the "technologies" around it do the work.
As maintainer of XML::Compile, I see many many schemas and WSDLs (SOAP). Like any good software project, those are usually full of mistakes, ugliness and heritage.
In previous years, I have taught how to use XML::Compile(::SOAP(::Daemon)). This time, they play only a minor role in this presentation (some examples shown) My target for this talk is to improve your knowledge about schema's/soap/wsdl to a level above the of average schema designer. This will help you with your next project.