2. Distributed Systems
3. 1. Introduction
4. 2. System Building Blocks
5. 3. Trade-Offs & Trapdoors
6. 4. HTTP
7. 5. Environment Variables
8. 6. Intro to Cryptography
9. 7. Identifiers
10. 8. Authenticated Sessions
11. 9. API Servers
12. 10. API Design
13. 11. CORS
14. 12. Message Queues