Statically cached web pages load much faster than the ones dynamically generated on-the-fly. This in turn enhances your site performance and speed.
Google officially confirms that among two websites of similar content and SEO quality, they will favour the one which loads faster and accordingly will rank it higher.
LiteSpeed mitigates DDoS, WordPress Brute Force, and other attacks.
With dedicated PHP LiteSpeed SAPI module, LiteSpeed Web Server is able to deliver a level of performance superior to that of mod_php as well as FastCGI.