Simple Object Access Protocol (SOAP) is based on XML protocol, used for information exchange in distributed systems. SOAP establishes client-server interaction and regulates operation factors transmission and return value. To submit any information transmitted from client to server and vice versa XML is used.
Microsoft SOAP Toolkit can be used to add XML Web Service functionality to COM components and applications. It is a lightweight and simple XML-based protocol that is designed to exchange structured and typed information on the Web. The purpose is to start up rich and automated Web services based on a shared and open Web infrastructure. It can be used in combination with a variety of existing Internet protocols and formats including HTTP, SMTP, and MIME and can support a wide range of applications from messaging systems to RPC. SOAP toolkit can make successful SSL connections and requests.
All SOAP Toolkits have been replaced by the Microsoft .NET Framework. SOAP Toolkit versions earlier than version 3.0 are no longer supported.