Q:

Why are there different versions of Internet Explorer?

A:

Quick Answer

As Microsoft adds new features and technologies to the Internet Explorer browser, new versions are released. Minor enhancements and security patches are released periodically as updates. As of November 2014, a mobile version of Internet Explorer also exists.

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Full Answer

The first version of Internet Explorer was released in 1995. It was included as an addition to the Windows 95 operating system. Each version of Internet Explorer is identified by a number divided into four segments. The first segment identifies the major version of the browser. The second segment identifies the minor version. The third and fourth segments represent the build and subbuild identifiers, respectively. Modifications to the minor version identifier represent major updates. Modifications to the build and subbuild identifiers reflect minor updates.

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