Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming services.
GitHub Pages is a static site hosting service.
Htmx is a JavaScript library for performing AJAX requests, triggering CSS transitions, and invoking WebSocket and server-sent events directly from HTML elements.
Unpkg is a content delivery network for everything on npm.
Varnish is a reverse caching proxy.