Google Cloud Trace is a distributed tracing system that collects latency data from applications and displays it in the Google Cloud Console.
Handlebars is a JavaScript library used to create reusable webpage templates.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Open Graph is a protocol that is used to integrate any web page into the social graph.