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.
Gatsby is a React-based open-source framework with performance, scalability and security built-in.
GitHub Pages is a static site hosting service.
PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.
React is an open-source JavaScript library for building user interfaces or UI components.
Varnish is a reverse caching proxy.