Solution 5. Access to Online Web Services

At the end of the last century, software development underwent a profound paradigm shift. Instead of primarily developing applications for specific operating systems, as had been the norm since the dawn of computer science, people began writing web applications that ran in a browser—any browser, for the most part—without regard to the operating system in which that browser ran.

Today, we are undergoing another paradigm shift. Instead of writing monolithic applications, people are beginning to stitch together applications from web services. Web services provide information over the Web, information that you can incorporate into your applications or websites. Like many things in computer science, web services ...

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