Terminology

2225 terms, tools, patterns and metrics an architect is expected to use precisely. Each one gets a short explanation of what it is, and — where it matters — what it is commonly confused with. Search filters as you type; the column headers sort.

All areas2225 Architecture Fundamentals77 Distributed Systems107 Data Architecture110 Cloud Architecture94 Networking88 API & Integration Architecture82 Reliability & Resilience75 Observability70 Performance & Capacity Engineering72 Security Architecture86 Cost Architecture & FinOps71 Business Architecture67 Architecture Communication67 Enterprise Architecture66 Legacy Modernization71 AI-Era Architecture74 Software Architecture & Engineering71 Architecture Patterns71 Architecture Decision-Making63 The Architect's Meta-Skills61 Delivery & Release Engineering66 Platform Engineering & Developer Experience70 Testing & Quality Architecture66 Data Platform Architecture69 Streaming & Real-Time Data69 Data Governance & Semantics74 Frontend & Experience Architecture66 Edge, Mobile & IoT68 Regulatory & Data Protection Architecture65 Assurance, Audit & Model Risk69

Kind Any concept801 practice736 pattern377 metric127 case-study77 tool62 protocol45

3 terms shown.

Term	Kind	Topic	What it is
Admission Policy	pattern	Policy as Code	A rule evaluated at the moment a resource is created or changed, which rejects the request rather than reporting on it afterwards.
Policy as Code Guardrail Policy	practice	Policy as Code	Expressing organisational rules as executable code evaluated automatically in pipelines and at admission, instead of as prose enforced by review.
Policy Failure Mode Admission Fail-Open, Fail-Closed Policy	concept	Policy as Code	What an admission-time policy engine does when it cannot be reached - fail open and allow the change, or fail closed and block it - decided per policy class rather than globally, because a uniform answer is wr…