Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.
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.
Varnish is a reverse caching proxy.
Vue.js is an open-source model–view–viewmodel JavaScript framework for building user interfaces and single-page applications.