Some of the most notable ones include Opcache caching, PHP-7 support, and Gzip compression.
PHP7 hosting environment with LiteSpeed LSAPI, APC & Opcache, Static and Dynamic Varnish cache.
Combine that with PHP-7 support plus Opcache caching, and you have yourself one heck of an optimized network.
Along with super-fast servers, you receive Memcached,
Turbo Cache, and Opcache/APC resources that are easily enabled in your hosting account.
Then to cap it off, DreamHost avails Opcache and PHP 7 for enhanced WordPress performance,
plus facilitating integrations with third-party WordPress plugins.
Their servers use PHP7 with APC and Opcache will significantly boost your website performance
to handle more simultaneous visitors with great page load time.