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What is the difference between Webservice and WCF
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Answer Posted / dhritirao
WCF is a replacement for all earlier web service
technologies from Microsoft. It also does a lot more than
what is traditionally considered as "web services".
WCF "web services" are part of a much broader spectrum of
remote communication enabled through WCF. You will get a
much higher degree of flexibility and portability doing
things in WCF than through traditional ASMX because WCF is
designed, from the ground up, to summarize all of the
different distributed programming infrastructures offered
by Microsoft. An endpoint in WCF can be communicated with
just as easily over SOAP/XML as it can over TCP/binary and
to change this medium is simply a configuration file mod.
In theory, this reduces the amount of new code needed when
porting or changing business needs, targets, etc.
ASMX is older than WCF, and anything ASMX can do so can WCF
(and more). Basically you can see WCF as trying to
logically group together all the different ways of getting
two apps to communicate in the world of Microsoft; ASMX was
just one of these many ways and so is now grouped under the
WCF umbrella of capabilities.
Web Services can be accessed only over HTTP & it works in
stateless environment, where WCF is flexible because its
services can be hosted in different types of applications.
Common scenarios for hosting WCF services are IIS,WAS, Self-
hosting, Managed Windows Service.
The major difference is that Web Services Use
XmlSerializer. But WCF Uses DataContractSerializer which is
better in Performance as compared to XmlSerializer.
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