Night Mode LabsBlue Book
Reference

Glossary

Use this glossary to keep consulting conversations consistent. When a client uses a term differently, capture the client-specific meaning in engagement notes.

Terms

TermMeaning
ADRArchitecture decision record that captures context, decision, consequences, alternatives, and review triggers.
ArtifactA deployable or auditable output such as a container image, package, build, SBOM, or evidence export.
Break-glassEmergency access path used when normal access or automation is unavailable.
ControlA policy, process, or technical mechanism that reduces risk or produces required evidence.
DriftDifference between intended state and actual deployed state.
Error budgetAllowed unreliability over a period, derived from an SLO.
GitOpsOperating model where desired state is declared in Git and reconciled automatically.
Golden pathSupported workflow or template that makes the recommended way easy to adopt.
Landing zoneBaseline cloud environment with identity, network, logging, policy, and cost controls.
Paved roadOpinionated, supported path for teams to build, deploy, and operate software.
RPORecovery point objective: maximum acceptable data loss.
RTORecovery time objective: maximum acceptable time to restore service.
SBOMSoftware bill of materials listing components in an artifact or application.
SLOService-level objective that describes expected reliability from the user's perspective.
ToilManual, repetitive operational work that scales with service usage or team count.
Workload identityIdentity assigned to software workloads instead of static credentials.

Usage guidance

Prefer plain language with stakeholders. Use specialized terms only when they make decisions clearer, not to make simple ideas sound fancier.

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