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

4 terms shown.

Term	Kind	Topic	What it is
Recovery Point Objective RPO	metric	RTO & RPO	The maximum acceptable data loss measured as a duration, determining the replication and backup strategy.
Recovery Time Objective RTO	metric	RTO & RPO	The maximum acceptable duration between a failure and restored service, agreed with the business rather than chosen by engineering.
Restore Granularity Recovery Unit, Restore Scope	concept	RTO & RPO	The smallest unit a recovery procedure can return without disturbing everything stored alongside it, which sets the real recovery time for any incident that affects a subset of the data.
RTO and RPO	metric	RTO & RPO	How long recovery may take, and how much data may be lost — the two numbers from which every disaster recovery design follows.