Terminology

2205 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 areas2205 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 Architecture69 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 Architecture64 Streaming & Real-Time Data69 Data Governance & Semantics69 Frontend & Experience Architecture66 Edge, Mobile & IoT68 Regulatory & Data Protection Architecture65 Assurance, Audit & Model Risk64

Kind Any concept794 practice734 pattern368 metric125 case-study77 tool62 protocol45

125 terms shown.

Term	Kind	Topic	What it is
Utilisation Floor	metric	Rightsizing	The minimum utilisation a resource should sustain before it is considered over-provisioned, set with enough margin for failure and peak.
Vendor Reversal Cost Buy Unwind Cost, Vendor Disentanglement Estimate	metric	Build vs Buy	The engineer-months needed to unwind a buy decision - dominated by business logic that leaked into the vendor's configuration rather than by anything the contract's termination clause covers.
Verified Recovery Restore Assurance, Tested Recoverability	metric	Backup Strategies	The measure that matters in data protection - the proportion of backups demonstrably restorable within the stated RTO - as opposed to backup success rate, which is near 100% even where recovery is impossible.
Watermark Lag	metric	Watermarks & Late Data	How far behind the newest event a watermark is held, which trades result latency against how much late data is included.
Window Overlap Factor Hop Multiplier, Sliding Window Fan-Out	metric	Windowing	The ratio of a sliding window's size to its advance - the number of windows each record belongs to, and therefore the multiplier on state, output volume and any naive sum taken downstream.