[lysol]

A company still using an operating system released 10 years ago probably sees little merit in migrating to hosted email, calendars, etc. They most likely have an old Exchange system that they are maintaining alongside those XP workstations. I doubt this affects many organizations.

[Silhouette]

Windows XP might have been available for a decade, but you have to consider that Vista flopped and Windows 7 only arrived around 3 years ago.

That means large numbers of organisations were still installing Windows XP as their standard desktop around 3 years ago, and possibly even more recently than that since they wouldn't necessarily have evaluated Windows 7 and set up to migrate to it from day 1.

Moreover, the days of upgrading hardware every 2-3 years are gone, at least in typical office environments that aren't really pushing the performance limits of a typical office PC any more.

In other words, for large organisations that keep relatively up-to-date, it's still entirely possible that they have a lot of WinXP machines still around today, even if their newer machines are on Windows 7 now.