What is the relationship between XML and Web services and SOA

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Although many technologies can be used to implement service-oriented architecture (SOA), Web services are the most commonly used.

This means using XML. SOAP and REST are the two most popular ways to implement Web services, both of which are based on XML.

An example

For example, by sending this SOAP document as a Web request, you can make a request to the Google Web service. (shown in listing 2) ▼

Listing 2 of ▼. Request to the Google Web service by sending an SOAP document

00000000000000000000000000000000 death star trash compactor 0 10 true false latin1 latin1

Here we can see the SOAP envelope (envelope), which is a standard format that the Web services engine can understand.

The content of this message (in this case, the doGoogleSearch element) is considered a payload and consists of information that will be processed by the Web service.

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