Criteo provides personalised retargeting that works with Internet retailers to serve personalised online display advertisements to consumers who have previously visited the advertiser's website.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Google Ads Conversion Tracking is a free tool that shows you what happens after a customer interacts with your ads.
Naver Analytics is a Korean based analytics service.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.