SOAP (Simple Object Access Protocol) and REST (Representational State Transfer) are two major pillar AIPs to solve the same problem how to access the web services, initially it seems to be very easy to choose, but at times it can be surprisingly difficult. Before you spend time in choosing over SOAP and REST that some web services support one while some others. Your decision would certainly depend on which Web service best meets your needs, rather than which protocol to use.
Let’s look at little closer at each— to see how they are different and would make you want to use one over the other for your application, if the shoe fits.
SOAP (Simple Object Access Protocol) is a standards-based Web services access protocol, and is a bit more complex by defining more standards than REST—things like security and how messages are sent. SOAP relies exclusive on XML to provide messaging services developed by Microsoft to keep an edge over older technologies that don’t perform well on internet such as Distributed Component Object Model (DCOM) and Common Object Request Broker Architecture (CORBA). It is a communication protocol system that permits processing using different OS like Linux and Windows to communicate via HTTP and its XML, and usually to designed to create, recover, update and obliterate records like accounts & passwords.
SOAP is highly extensible through other protocols and technologies and can be used in enterprise solutions with formal contract-based exchange formats. is highly extensible through other protocols and technologies.
Rest (Representational State Transfer) is the architectural style of the web itself and is protocol independent. It uses HTTP protocols like GET, PUT, POST to link resources to actions within a client-server relationship. In addition to the client-server mandate, it has several other defining constraints. The principles of RESTful architecture serve to create a stable and reliable application, that offers simplicity and end-user satisfaction.
|Function||Function-driven: transfer structured information||Data-driven: access a resource for data|
|Data Format||Only uses XML||Permits many data formats, including plain text, HTML, XML and JSON|
|Security||Supports WS-security and SSL||Supports SSl and HTTPS|
|Bandwidth||Requires more resource and bandwidth||Requires fewer resources and lightweight|
|Data Cache||Cannot be Cache||Can be Cache|
In conclusion, we would like to say that, as everywhere in custom software development, there is no universal solution in the choice of protocols for creating web API architecture. Each application is unique, and your decision should be based on what is best for your project. Moreover, you can combine API protocols to achieve the most optimal results.