Web service là những API dùng trên HTTP

An API (Application Programming Interface) is the means by which third parties can write code that interfaces with other code.
A Web Service is a type of API, one that almost always operates over HTTP (though some, like SOAP, can use alternate transports, like SMTP).
Web API is typically done as HTTP/SMTP (REST/SOAP), output can be eg: JSON/XML, input can be XML/JSON or plain data.


REST	SOAP
– REST (Representational State Transfer) was Created in 2000 by Roy Fielding in UC, Irvine. – Developed in an academic environment, this protocol embraces the philosophy of the open Web	– SOAP (Simple Object Access Protocol), was created in 1998 by Dave Winer et al in collaboration with Microsoft. – Developed by a large software company, this protocol addresses the goal of addressing the needs of the enterprise market.


REST	SOAP
– Makes data vailable as resources (nouns), for example “user” or “invoice”	– Makes data available as services (verb + noun), for example “getUser” or “PayInvoice”


REST	SOAP
– Follows the philosophy of the Open Web – Relatively easy to implement and maintain – Clearly separates client and server implementations – Communication isn’t controlled by a single entity – Information can be stored by the client to prevent multiple calls – Can return data in multiple formats (JSON, XML etc)	– Follows a formal enterprise approach – Works on top of any communication protocol, even asynchronously – Information about objects is communicated to clients – Security and authorization are part of the protocol – Can be fully described using WSDL


REST	SOAP
– Only works on top of the HTTP protocol. – Hard to enforce authorization and security on top of it	– Spends a lot of bandwidth communicating metadata. – Hard to implement and is unpopular among Web and mobile developers. – Uses only XML.


REST	SOAP
– When clients and servers operate on a Web environment – When information about objects doesn’t need to be communicated to the client	– When clients need to have access to objects available on servers – When you want to enforce a formal contract between client and server


REST	SOAP
– Social Media services – Social Networks – Web Chat services – Mobile Services – Synchronize applications	– Financial services – Payment gateways – Telecommunication services


REST	SOAP
– Facebook APIs – Google APIs – YouTube APIs – Twitter APIs – LinkedIn APIs – Instagram APIs	– Salesforce SOAP API – Paypal SOAP API – Clickatell SMS SOAP API – Almost Banking Systems

Can help find/isolate problems:

Reduce business costs

Cập nhật lần cuối : 2 tháng 7, 2024
Tạo : 20 tháng 4, 2024