The document discusses different web service stack architectures, including complex stacks designed for reliability, and simpler stacks using technologies like SOAP, REST, and XML over HTTP. Simpler stacks with less complexity allow for more innovation and easier development compared to complex stacks.

2. Terminolgy / Definitions: Web Services - Web Services Stack Hyper Text theory XML Data HTTP SOAP (Simple Object Access Protocol) REST (Representational State Transfer) AJAX GIS

3. Web Services Stacks Complex Designed to create highly reliable programming environments for distributed applications Used Hypertext Theory for design Eventually more simplistic designs came about

4. Web Services Stacks Simple – (Amazon.com / ToysRus) SOAP (Simple Object Access Protocol) REST (Representational State Transfer) XML Data over HTTP (lightweight approcach)

5. Web Services Stacks Less complexity, more simplicity Let hackers hack Let innovators be innovative