Glossary

LiteSpeed

LiteSpeed is a high-performance web server compatible with Apache configs, popular in hosting for its built-in caching and efficiency.

LiteSpeed Web Server (LSWS) is a commercial, high-performance web server widely used in the hosting industry as a drop-in replacement for apache. OpenLiteSpeed is its open-source sibling.

Strengths

Apache-compatible — reads .htaccess and most Apache configs, easing migration.
Event-driven — efficient concurrency like nginx, with lower memory use than Apache.
Built-in caching — LSCache integrates tightly with wordpress and other CMSs for fast page delivery.
Native http-2, http-3, and gzip-brotli support.

Why it matters for hosting

Many shared-hosting and cpanel providers run LiteSpeed precisely because it accelerates php and wordpress workloads while keeping Apache-style configuration. If a site's Server header reads LiteSpeed, you can usually expect strong built-in caching and modern protocol support out of the box.

See also

Apache HTTP Server Apache is a mature, widely deployed open-source web server known for its module system and flexible per-directory .htaccess configuration. Nginx Nginx is a high-performance, event-driven web server and reverse proxy prized for handling many concurrent connections with low memory use. PHP PHP is a widely used server-side scripting language that powers WordPress and much of the web, generating dynamic pages on the server. Caching Caching stores copies of data or pages so repeat requests are served instantly, reducing server work and dramatically speeding up websites.

← All terms