Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Linkedin Ads is a paid marketing tool that offers access to Linkedin social networks through various sponsored posts and other methods.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
NitroPack creates optimised HTML cache for fast page loading experience.
Open Graph is a protocol that is used to integrate any web page into the social graph.
WP Engine is a website hosting provider.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.