Terminology

2240 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 areas2240 Architecture Fundamentals77 Distributed Systems107 Data Architecture110 Cloud Architecture94 Networking88 API & Integration Architecture82 Reliability & Resilience80 Observability75 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 Architecture71 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 concept806 practice738 pattern379 metric133 case-study77 tool62 protocol45

5 terms shown.

Term	Kind	Topic	What it is
Beacon Survivorship RUM Survivorship Bias, Abandonment Bias	concept	Real User Monitoring	The bias in field performance data caused by users abandoning a page before the measurement beacon is sent - so the slowest sessions are excluded and the metric improves as the experience gets worse.
Field Data Versus Lab Data	concept	Real User Monitoring	The difference between what real users on real devices experience and what a synthetic run measures, and why the second is systematically optimistic.
Interaction to Next Paint INP, Responsiveness Metric	metric	Real User Monitoring	A field metric reporting one of the slowest complete interactions on a page - input delay plus handler processing plus the wait for the next paint - which replaced First Input Delay as a Core Web Vital on 12 M…
Real User Monitoring RUM	tool	Real User Monitoring	Telemetry collected from actual browser sessions, capturing what real users on real devices and networks experienced.
Representative Device Measurement Measure Where Users Are, Field Distribution	practice	Real User Monitoring	Measuring performance on the devices and networks the audience actually uses, and on the distribution rather than the median - because a build agent and a median user both represent nobody in particular.