Web-Based Services are services which provide access to information resources based on Web technologies. Web-based services are an ideal platform on which Web-Based Publishing can build, using the information resource access to provide interfaces for various platforms. The more common term Web Services is often used for the rather restricted set of technologies based on WSDL, SOAP and UDDI. This course focuses on a less middleware-oriented approach to Web-based services, and instead focuses on foundations such as the Hypertext Transfer Protocol (HTTP) for communications and Representational State Transfer (REST) as the architectural principle. The goal of this course is to look at Web-based services with a truly Web-like perspective, emphasizing simple and accessible technologies.