The following is a brief introduction to the difference between Windows 2003 and Windows 2008. Windows 2003 and Windows 2008 Introduction Windows 2003 is the old generation server system of Microsoft. It comes with iis 6. The operation interface is similar to Windows XP. Because many IDCs in China like to use pirated windows 2003, Windows 2003 is the most popular Windows server system. Because of this, the security of Windows 2003 has been questioned. Many bad users like to attack Windows 2003. It is very unsafe to update the gaps in the system. Windows 2008 is almost released with vista at the same time, but vista has a bad reputation. Windows 2008 is also very popular. There are not many IDCs for Windows 2008 servers in China, such as Western Digital and Wanwang. Currently, Windows 2008 is available. Windows 2008 comes with IIS 7 or IIS 7.5, you can customize the installation, and Windows 2008 firewall is more powerful, the server will be more secure, performance will be improved a lot, estimated to be 20%. Windows 2008 and windows 2008 R2 windows 2008 is the initial release version, windows 2008 R2 is the system after installing the big patch, windows 2008 system comes with IIS 7, windows 2008 R2 comes with IIS 7.5, IIS 7.5 is better than IIS 7 Some features are easier to use, so it is recommended to use the Windows 2008 R2 version. In addition, the two versions of the system are actually the same generation of server systems, the patches will be updated, and the functions used are not much different. Windows 2003 or 2008 comes with IIS introduction windows 2003 comes with iis 6, windows 2008 comes with iis 7, windows 2008 R2 comes with iis 7.5, compared to iis 6, iis7 and iis7.5 custom installation The function will be more powerful, and you don't have to install some unsafe components, which will ensure the security of the server. In addition, the interface of iis 7 and iis 7.5 will be simpler, similar to the control panel of the virtual host, many functions are clearly visible, and it is easier to set up than iis 6. The pseudo static file of iis 6 is httpd.ini, the pseudo static file of iis 7 or iis 7.5 is web.config file, but after installing urlrewrite component in iis 7 or iis 7.5, you can easily import the pseudo static file under apache, this will make Pseudo-static becomes simpler. In addition, iis7 and iis 7.5 set gzip compression and http cache will be simpler, you can complete the settings without editing any files, it is suitable for novices. How to choose windows 2003 or 2008 As mentioned above, Windows 2008 is the new stable Windows version, which is safer than Windows 2003, and the efficiency will be higher. If there is a choice, and the memory is greater than 1G, then try to choose windows. 2008 or windows 2008 R2 version; of course, if there is no choice, or the memory is less than 1G, you can continue to choose windows 2003. Windows 2003 is equivalent to windows XP, windows 2008 is equivalent to windows 7, the latter will be the mainstream, the former has entered the extended technical support service period, the patch update will not be timely than the latter, there is no low security risk. Now, it is still a small estimate. It is expected that in the next one or two years, more than half of IDCs in China will provide Windows 2008 or Windows 2008 R2 version of virtual host or VPS or cloud host selection, which may not necessarily make Windows 2008 mainstream, but lacks Windows 2003, which is supported by mainstream technology, will be eliminated sooner or later, or the Windows server will be updated soon.