This appendix describes the issues and approaches involved in tuning a Web server when running Internet Information Services (IIS) 5.0 on Microsoft Windows 2000 Server. It discusses the importance of monitoring and testing, as well as potential hardware, software, and tools issues that may arise. There is a section on new or changed IIS and Windows 2000 settings and features, and there are a number of sections that list useful tips, registry and metabase settings, and resources for your reference. While this appendix is written specifically for IIS 5.0, much of this material may also be useful for IIS 4.0 administrators.