Why is windows not like a mobile phone system updated every year?

Microsoft released its Windows 7 system in 2009, and the system version was well received by all. Of course, with such excellent feedback, the last version of Windows Vita is too hard to work with. Three years after the release of Windows 7, Microsoft released Windows 8 in 2012, and Windows 8, which uses the new Metro graphics interface, had a strong market conflict after the launch, and many users thought the system was too radical and too drastic. Over time, however, the user's acceptance of Windows 8 has become more and more high. So why doesn't windows launch an update once a year like the mobile phone system, iOS or Android?

The PC is now in a market-saturated state. In the last century, with the Windows operating system, the full popularity of PCs, and after the introduction of Windows XP, the basic completion of the final wave of market access, after this, the amount of PC ownership is basically stable. However, as the two years of fierce competition in the market, the PC has a performance surplus, so that the use of the PC significantly longer.

Microsoft's attitude towards system upgrades has always been cautious, with minor system updates being pushed directly through patches. For newer generations like iOS, if you put Microsoft on, you may not update the version number at all, but simply update the patch package to complete the upgrade.

In addition, Microsoft is a strict software engineering company, all development, including Internet development, are strictly adhered to TDD,TDD-test-driven development, this development method is: first put on the implementation of the function of the hat, in the aid of testing, quickly realize its function; then put on the reconstructed hat, under the protection of the test, Improve code quality by removing redundant code. After this development approach, each time for the development of new windows have to go through a lot of testing process, coupled with major upgrades to the architectural adjustment of the enormous workload, so that the speed of the update of the Windows iteration is limited objectively.

But this slightly slower update is not all that good, because this slow update is more appropriate for the enterprise to upgrade the system. As we all know, a large number of enterprise users is one of the important sources of Windows revenue. Every time a major Windows upgrade occurs, the entire company's operating system will typically experience a year or more of testing, followed by a long update, to complete a company-wide version of the upgrade, which consumes a small amount of energy and time. Another problem that cannot be ignored is that the slow update frequency also applies to individual users. Users in the use of Windows, the need for system stability is significantly greater than the requirements of the update. This is why Windows XP in the Chinese market still has a large number of people in the use of the reason, the system is fast and stable, you can give users to abandon the pursuit of the new version.

Therefore, Microsoft will not like the mobile phone system as a year update, in addition to the objective development and debugging speed of the impact of the system is also the stability of Microsoft's pursuit of an important factor.