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

4 terms shown.

Term	Kind	Topic	What it is
Adaptive Admission Level Priority Admission Threshold, Collaborative Load Shedding	pattern	Queueing Theory	A load-dependent priority threshold that a service publishes back to its callers, so requests that would be rejected downstream are never sent and upstream work is not wasted.
Queueing Delay	concept	Queueing Theory	The time a request spends waiting rather than being served, which rises non-linearly as utilisation approaches capacity.
Utilisation and Queueing Delay	concept	Queueing Theory	The non-linear relationship by which waiting time grows as utilisation approaches one, explaining why systems degrade suddenly rather than gradually.
Utilisation Target	practice	Queueing Theory	The operating point chosen from a latency requirement rather than from cost efficiency, because queueing delay rises non-linearly as utilisation approaches saturation.