The term Web Services refers to loosely coupled, executable application components linked dynamically over the network with open standards. Typically, they are software components that employ one or a combination of the following XML standards: SOAP, WSDL, and UDDI. Ruby on Rails is an open source Web application framework written in Ruby that closely follows the Model View Controller (MVC) architecture. It strives for simplicity, allowing real-world applications to be developed in less code than other frameworks and with a minimum of configuration. To define Rails - the Web Services or a Web Framework - we have to say that Rails is a full-stack, open source Web development framework that requires comparatively less time and effort to code XML interfaces than most other frameworks.