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.
Mailchimp is a marketing automation platform and email marketing service.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Phoenix LiveView is a library that brings live, interactive, real-time user experiences to your Phoenix applications.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.