Amazon Advertising (formerly AMS or Amazon Marketing Services) is a service that works in a similar way to pay-per-click ads on Google.
AMP, originally created by Google, is an open-source HTML framework developed by the AMP open-source Project. AMP is designed to help webpages load faster.
LiteSpeed Cache is an all-in-one site acceleration plugin for WordPress.
LiteSpeed is a high-scalability web server.