3 — Zero Trust

Site Reliability Engineering: From Foundations to Internet-Scale Systems

The complete 184-chapter, 15-part Site Reliability Engineering curriculum — from Linux internals and distributed-systems theory through reliability engineering, observability, incident response, platform engineering, and Staff/Principal-level MAANG interview preparation, ordered the way SRE expertise actually develops rather than as a topic index.

1 — Identity and Access Management

Who can do what, to which system, and how that access is granted, reviewed, and revoked — the control plane every other security chapter in this Part depends on.

10 — Business Continuity

The organizational plan for keeping the business running through a disaster, of which technical disaster recovery is only one component.

2 — Secrets Management

Why a secret hardcoded in a config file or env var is a standing incident waiting for a git history search, and the vault-backed rotation that closes that gap.

4 — Network Security

Segmentation, firewalling, and the assumption that lateral movement is possible the moment any single node is compromised.