Now that Windows Server 2008 has been released earlier this year many enterprises are assessing the value proposition of moving to the Windows Server 2008 and IIS 7.0. As an IT Pro or decision maker in this process you want real world working proof to make your decision clearer. Sure, the new file based configuration system and modular architecture of IIS 7.0 make administrating your web servers a whole lot more flexible. But how does it perform against its predecessor IIS 6.0 / Windows Server 2003?
Microsoft.com Operations has been an early and active adopters of IIS 7.0 / Windows Server 2008. We actually started running a single server on the www.microsoft.com site back in June 2005. We set out to answer this question. Is IIS 7.0 / Windows Server 2008 more performant then IIS 6.0 / Windows Server 2003? We performed a side by side performance analysis on the www.microsoft.com site which was taking live internet traffic during peak traffic hours.
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