Installed base

Installed base is a measure of the number of units of a particular type of system (usually a computing platform) actually in use, as opposed to market share, which only reflects sales over a particular period. Because installed base includes machines that may have been in use for many years, it is usually a higher figure than market share. Many people see it as a more reliable indicator of a platform's popularity.

This business-related article is a stub. You can help Wikipedia by expanding it. v • d • e