Web services extend the World Wide Web infrastructure to provide a means for software to connect to other software applications. Applications access Web services via web protocols and data formats such as HTTP, JSON, and REST, without needing to know how each Web service is implemented.
Unlike SOAP-based Web services, there is no "official" standard for RESTful Web APIs. This is because REST is an architectural style, while SOAP is a protocol. REST is not a standard in itself, but RESTful implementations make use of standards, such as HTTP, URI, JSON, and XML.
Anchor Software’s REST based Web service provides the end user the ability to have multiple users and/or systems perform multiple, simultaneous address verification lookups. Users can create an internal company website, or a stand-alone application in any platform and language of their choice to retrieve this address-lookup information. AddressPro supports HTTP and 128-bit encryption HTTPS connectivity.