Terminology

991 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 areas991 Architecture Fundamentals38 Distributed Systems73 Data Architecture71 Cloud Architecture55 Networking51 API & Integration Architecture45 Reliability & Resilience40 Observability33 Performance & Capacity Engineering34 Security Architecture50 Cost Architecture & FinOps30 Business Architecture28 Architecture Communication27 Enterprise Architecture27 Legacy Modernization27 AI-Era Architecture34 Software Architecture & Engineering37 Architecture Patterns34 Architecture Decision-Making30 The Architect's Meta-Skills27 Delivery & Release Engineering20 Platform Engineering & Developer Experience20 Testing & Quality Architecture20 Data Platform Architecture20 Streaming & Real-Time Data20 Data Governance & Semantics20 Frontend & Experience Architecture20 Edge, Mobile & IoT20 Regulatory & Data Protection Architecture20 Assurance, Audit & Model Risk20

Kind Any concept379 practice294 pattern166 metric55 tool36 protocol35 case-study26

20 terms shown.

Term	Kind	Topic	What it is
Adversarial Evaluation	practice	Model Evaluation & Red-Teaming	Deliberately attempting to make a model behave badly, because a probabilistic system with no fixed expected output cannot be verified by conventional testing.
Assurance Map	practice	Assurance, Audit & Model Risk	A single view of which risks are covered by which assurance activity, exposing both the gaps nobody is looking at and the duplication several parties are paying for.
Automation Bias	concept	Human-in-the-Loop Design	The tendency of a human reviewer to accept a system's output rather than evaluate it, which is what turns human oversight into a rubber stamp.
Certification Scope Boundary	concept	Certification Impact on Architecture	The declared set of systems, locations and people a certification covers, which determines both its cost and what it actually tells a customer.
Conformance Automation	practice	Architecture Compliance Checks	Encoding architectural standards as automated checks, so review effort is spent on novel design decisions rather than on verifying known rules.
Control Test Automation	practice	Continuous Controls Monitoring	Executing a control's test continuously against the whole population rather than sampling it annually, which changes both the detection latency and the strength of the evidence.
Design Review Trigger	practice	Security Design Review	The stated conditions under which a change requires security review, so that review capacity goes to what warrants it and everything else proceeds.
Evidence Based Approval	practice	Change Advisory vs Automated Gates	Replacing a human judgement about whether a change is safe with a machine-produced record of the checks it passed, assessed once for the class rather than per instance.
Evidence by Construction	practice	Audit Evidence	Designing systems so that operating them produces the audit evidence automatically, rather than reconstructing it from screenshots when an assessment arrives.
Fairness Definition Choice	concept	Bias & Fairness Controls	Selecting which mathematical fairness criterion applies, given that the main criteria are provably incompatible and the choice is a value judgement.
Independent Assurance	concept	Three Lines Model	Assessment by a function with no involvement in designing or operating the control, which is what makes the assessment worth anything.
Model Card	practice	Model Documentation	A structured record of what a model is for, how it was built and where it should not be used — written for the people who will deploy or be affected by it.
Model Inventory	practice	Model Risk Management	A complete register of models in use with their purpose, owner, risk tier and validation status — the artifact everything else in model governance depends on.
Operating Effectiveness	concept	Control Design vs Operation	Whether a control actually ran, consistently, over a period — as distinct from whether it was well designed, and the harder of the two to demonstrate.
Quantified Risk Estimate	practice	Risk Assessment Methods	Expressing a risk as a probability distribution over financial loss rather than as a colour, which makes risks comparable and mitigations arguable on cost.
Review Scope Discipline	practice	Design Authority	Stating what an architecture board does not review, which is what determines whether it stays useful or becomes a queue.
Risk Tolerance Statement	concept	Risk Appetite	The board-level declaration of how much of each risk type the organisation will accept, which is what tells an architect which risks may be accepted without escalation.
Time-Boxed Waiver	practice	Exception & Waiver Management	An approved deviation from a standard that carries an owner, a justification, a compensating control and an expiry date after which it is reconsidered.
Toxic Combination	concept	Segregation of Duties	A pair of permissions that is acceptable individually and dangerous together, which is what a segregation-of-duties model exists to identify.
Use Case Risk Classification	practice	AI Risk Tiering	Assigning an AI application to a risk tier based on the consequence of it being wrong, which then determines the obligations that apply.