Search the practice set

term

Configuration Drift Detection

Continuously comparing declared infrastructure against what actually exists, so out-of-band change is found on a Tuesday rather than during a rebuild.

IaC Modules & Drift term

Configuration Drift

Divergence between the infrastructure described in code and the infrastructure actually running, usually caused by manual changes.

Infrastructure as Code term

Clock Drift

Device clocks diverging from real time, which corrupts ordering, expires certificates early or late, and produces data that appears to arrive from the past.

Physical-World Failure Modes term

Ephemeral Environment

A full environment created on demand for one change and destroyed afterwards, which removes the queue for shared environments and the drift within them.

Developer Environments term

Infrastructure as Code

Defining infrastructure in version-controlled declarative files that a tool reconciles against the real environment.

Cloud Architecture term

Modular Monolith

A single deployable unit internally partitioned into modules with enforced boundaries, explicit interfaces and no shared internal state.

Architecture Patterns term

Terraform State

The file mapping declared resources to real infrastructure, without which the tool cannot tell what it already created — and which becomes critical infrastructure in its own right.

Infrastructure as Code

quiz

Half your production changes are made through the console during incidents. The IaC repository no longer matches reality. What do you do?

Why this matters beyond tidiness The code has stopped being a description of reality, which removes the properties it was adopted for: the ability to recreate a

Infrastructure as Code quiz

A deployed model performed well in validation and its business metric has declined over four months. Nothing has been deployed. What do you investigate?

The model did not change; its world did Three distinct causes, and they need different responses: Data drift. The input distribution has moved — a new customer

Model Risk Management

topic

IaC Modules & Drift

Reusable infrastructure modules, state ownership, and detecting what changed out of band.

2 items topic

Infrastructure as Code

Declarative infrastructure, drift, state files and rebuild-from-empty.

5 items topic

Physical-World Failure Modes

Power loss, tampering, clock drift, thermal limits, and a truck through the fibre.

2 items