http://blogs.iis.net/rickjames/archive/2007/10/12/fastcgi-rapid-failure-protection.aspxFastCGI Rapid Failure Protection There are a lot of similarities between FastCGI's Rapid Failure Protection feature and w3svc/WAS', read here for more information. FastCGIs performance (vs CGI) is derived from amortizing process creation and startup costsenCommunityServer 2007 SP1 (Build: 20510.895)