A very feature rich caching, that works with most servers, but has deeper integration with LiteSpeed powered servers. Takes care of all the normal minification and caching requirements, but also offers image optimization and CDN. Hundreds of options allows for thousands ways to screw up, so progress carefully and test often.
Extract from WordPress.org
LiteSpeed Cache for WordPress (LSCWP) is an all-in-one site acceleration plugin, featuring an exclusive server-level cache and a collection of optimization features.
https://wordpress.org/plugins/litespeed-cache/