Great systems aren’t just designed for correctness; they are designed for Operability.

In this final module, we look at the patterns that keep global systems running smoothly. We’ll explore how to handle vast amounts of telemetry without breaking the bank, how to move from perimeter security to Zero Trust, and how to optimize architecture based on infrastructure costs.

Chapters

1. Observability: Tail Sampling

  • Signal vs Noise: Moving from basic logging to Intelligent Tracing.
  • Techniques: Head vs Tail sampling and High-Cardinality metrics.
  • Interactive: Tail Sampling Probability Simulator.

2. Security: Zero Trust & mTLS

  • Identity over Perimeter: Why the internal network should be untrusted.
  • Internals: SPIFFE identity and certificate rotation via Envoy.
  • Interactive: mTLS Handshake & Rotation Visualizer.

3. Deployment & Cost Architecture

  • Safe Deployments: Blue/Green, Canary, and dark launches.
  • Cloud Finance: Optimizing for cost (S3 Express vs Intelligent Tiering).
  • Interactive: S3 Storage Cost Comparison Slider.

Module Chapters