Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Klaviyo is an email marketing platform for online businesses.
Laravel is a free, open-source PHP web framework.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
Sass is an extension of CSS that enables you to use things like variables, nested rules, inline imports and more.
Varnish is a reverse caching proxy.