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Add to SafariWhen comparing IIS vs LiteSpeed Web Server, the Slant community recommends LiteSpeed Web Server for most people. In the question“What are the best web servers?” LiteSpeed Web Server is ranked 7th while IIS is ranked 13th.
Specs
Question Ranking
Pros
Pro PHP spport
PHP applications can be run using IIS. Simple to install and configure.
Pro .NET and ASPX script support
Pro Supported by Microsoft
Pro Authentication (Anonymous, Basic, Digest, Integrated Windows Auth, UNC, .NET Passport (<6), Certificate)
Pro IPv6 support (IIS 6+)
Pro Multiple websites can be run on 1 server
Pro HTTP/2, HTTP/2, HTTPS, FTP, FTPS, SMTP and NNTP support
Pro Runs on literal NT 3.51
So you can boot up that ancient work computer and get IIS (Free addon at the time) for that computer
Pro Very fast
If you want a quick web server, use this, because i mean like, on my laptop, the first request is 1 or 2 seconds, after that, it becomes a split second!
Pro In-depth diagnostic tools
Pro Can handle thousands of concurrent clients with minimal memory and CPU usage
Pro Great support
From my personal experience, the support is great.
Pro Fastest Cache System for Wordpress - Litespeed Cache
Litespeed Cache for WordPress is faster than any other cache mechanism available for WordPress, coupled with additional Optimization options provided for free by Litespeed with quic.cloud allows you to keep your WordPress websites fastest.
Pro Native Fast Cache Plugins for all major CMS'es
Litespeed has great cache plugins for Prestashop, Magento, Cscart and because of its caching implementation, it is the fastest way to speed up your CMS'es.
Pro HTTP/3 Support with Maximum Browsers
Litespeed's HTTP/3 Implementation supports most vast range of browsers.
Cons
Con 1 website limit per server (also pre-7.0 client os limit)
Con 10 simultaneous connection limit on versions before 7.0 on client operating systems
Con Only runs on Windows
This Microsoft-proprietary web server software, can only run in the Windows operating systems for full support of it and all of its features. It is not capable of being run in a non-Windows environment without sacrificing some functionality and of course the support.
Con Proprietary
Con Free version is limited
There is a RAM limit and a domain limit
