Web application vs Webservice vs WCF in asp.net

Web application vs Webservice vs WCF in asp.net

Disadvantage of Web application
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In web application, its not possible to connect different technologies for eg[Java and Dotnet] and not possible to connect the application in two different servers.

Why Webservice?
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Webservice use SOAP (Simple Object Access protocol) and it is used to connect the web application using different type of technologies, and possible to connect the application that have hosted in different type of servers.

Disadvantage of Webservice
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Webservice use only HTTP Protocol.
It provides only singlex communication, not half duplex and full duplex communication.
They work in an stateless fasion over HTTP and are hosted inside a web server like IIS

Half duplex
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Half-duplex data transmission means that data can be transmitted in both directions on a signal carrier, but not at the same time.
half-duplex transmission implies a bidirectional line (one that can carry data in both directions).

They work in an stateless fashion over HTTP and are hosted inside a web server like IIS

Full duplex
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Full-duplex data transmission means that data can be transmitted in both directions on a signal carrier at the same time.
Full-duplex transmission necessarily implies a bidirectional line (one that can move data in both directions).


Advantages of WCF Service
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WCF Service support  HTTP, TCP, IPC, and even Message Queues for communication.
We can consume Web Services using server side scripts (ASP.NET), JavaScript Object Notations (JSON), and even REST (Representational State Transfer).
It can be configured to have singlex, request-response, or even full duplex communication.
These can be hosted in many ways inside IIS, inside a Windows service, or even self hosted.