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
Adoption Curve	metric	Platform Adoption	The proportion of teams actually using a platform capability over time, which is the only honest measure of whether the platform is working.
Base Image Currency	metric	Container Image Strategy	How far behind the fleet's running images are from their patched base, which is the number that decides how fast a critical vulnerability can be closed.
Cluster Split Axis	concept	Cluster Architecture	The dimension along which the estate is divided into clusters — the single decision that determines both blast radius and operational load.
Deprecation Window	practice	Platform API Deprecation	The stated period between announcing that an internal interface will be removed and removing it, with the removal actually happening at the end.
Enabling Team	pattern	Platform Team Topologies	A team whose output is other teams' increased capability, working alongside them temporarily and deliberately removing itself.
Ephemeral Environment	pattern	Developer Environments	A full environment created on demand for one change and destroyed afterwards, which removes the queue for shared environments and the drift within them.
Golden Path	pattern	Paved Road & Golden Path	One opinionated end-to-end route from idea to production that is genuinely easier than the alternatives, and is supported rather than mandated.
Inner Loop Latency	metric	Inner Loop & Outer Loop	The time from changing a line to observing its effect, repeated dozens of times a day and therefore the highest-leverage number in developer experience.
Internal Consumer SLO	metric	Platform SLOs	A reliability commitment made to teams who cannot switch supplier, which is why it must be measured from their side rather than from the platform's.
Leaky Abstraction Cost	concept	Abstraction Level Choice	What a consumer pays when a platform abstraction hides a mechanism they must nonetheless understand to diagnose or tune it.
Namespace Tenancy	pattern	Platform Tenancy	Isolating teams within a shared cluster by namespace plus quota plus network policy, and being explicit about what that does not isolate.
Paved Road Telemetry	practice	Platform Telemetry	Instrumenting the platform's own usage — where teams succeed, where they stall, where they leave — so its roadmap is driven by evidence.
Platform Contract	concept	Platform APIs	The platform's promise to its consumers about interface stability, behaviour and support, treated with the same seriousness as an external API.
Platform User Research	practice	Platform Engineering	Treating engineers as users whose actual behaviour is observed rather than assumed, which is what separates a platform from a set of shared tools.
Preventive Control Placement	concept	Guardrails vs Gates	Choosing where in the lifecycle a control acts — at authoring, at admission or after the fact — which determines both its strength and its cost.
Provisioning Self-Service	practice	Self-Service Provisioning	Teams obtaining infrastructure without a ticket, within bounds that make the request safe by construction rather than by review.
Service Catalogue Entry	concept	Internal Developer Platform	The record that makes a service a first-class object in the platform — owner, dependencies, docs, runbooks and health in one place with a single identity.
Service Scaffolding	tool	Service Templates	Generating a new service with observability, CI, security and ownership already wired in, so the standard is the default rather than a checklist.
Showback	practice	Platform Funding	Reporting each team's share of platform and infrastructure cost without actually charging it, to change behaviour without creating a market.
Sidecar Overhead	metric	Service Mesh Operations	The latency, memory and failure surface a mesh proxy adds per pod, which is the price of what the mesh provides and is frequently unmeasured.