Carrot quest is a customer engagement and communication platform that aids businesses in improving interactions with users and customers through targeted messaging, in-app messaging, live chat, email campaigns, and user behavior tracking.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
PHP is a general-purpose scripting language used for web development.