BEM (Block, Element, Modifier) is a naming convention for classes in HTML and CSS what was developed by Yandex.
DDoS-Guard is a Russian Internet infrastructure company which provides DDoS protection, content delivery network services, and web hosting services.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.