OAuth 2.0 is an open authorization framework and mainly focuses on authorization flows fand secures access to many well-known web APIs.
A lambda expression represents an anonymous function. It comprises of a set of parameters, a lambda operator (->) and a function body.
SOAP : Web service use XML messages that follow the Simple Object Access Protocol (SOAP) standard.
RESTful : Web service, often better integrated with HTTP than SOAP-based services are, do not require XML messages or WSDL service–API definitions.
Software engineers apply the principles of engineering to the design, development, maintenance, testing, and evaluation of the software and systems that make computers or anything containing software work.