David Malan System Design Topics

Shared Web Hosting
https://en.wikipedia.org/wiki/Shared_web_hosting_service

Virtual Private Service
https://en.wikipedia.org/wiki/Virtual_private_server

Scalability: Veritcal and Horizontal Scaling
https://en.wikipedia.org/wiki/Scalability
http://www.thoughtsoncloud.com/2014/04/explain-vertical-horizontal-scaling-cloud/

Load Balancing
https://en.wikipedia.org/wiki/Load_balancing_(computing)

Data Redundancy:
https://en.wikipedia.org/wiki/RAID

DNS
https://en.wikipedia.org/wiki/Name_server

Sessions & Cookies
https://en.wikipedia.org/wiki/Session_(computer_science)
https://en.wikipedia.org/wiki/HTTP_cookie