Evolution of the platform application

The first platform used for the execution of applications was the PC, and it offered
the facility to run our applications. Unfortunately, technical knowledge (memory,
I/O, Interrupts, BUS, and so on) was often necessary to build applications.
Currently, operating systems have become the standard platform to support
our applications. Proof of this are the various applications for office, database
management, multimedia, and others that are executed using those operating systems.

The emergence of the World Wide Web and tools for navigating it (Internet Explorer
and Netscape), helped to bring about the emergence of a new platform called the
Web (currently called Web 1.0).
At the beginning, the GUI of this platform was limited (using only HTML and
JavaScript) and it didn't offer the richness of solutions built under the support of
the operating system.
The emergence of new technologies that enrich the user interface, such as AJAX,
consolidated the Web as a platform for a new generation of applications that are able
to take advantage of these technologies. Google, Google Maps, Wikipedia, Blogs, and
Flickr are evidence of this. This new version of the Web platform is called Web 2.0.