Google introduced AMP pages (Accelerated Mobile Pages) project for web developers to solve the issue of webpages with less speed. When a page will take longer time to open, It may frustrate your users, so using AMP for your wordpress webiste or blog will be a wise decision.
Below are best AMP WordPress Plugins which are favorite among developers.
AMP Plugin by Automattic
AMP for WP – Accelerated Mobile Pages
AMP Supremacy Plugin
Templatic Google-AMP Plugin
Glue for Yoast SEO & AMP