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Security architecture defines the structural placement of security capabilities across an IT estate. It specifies principles, patterns, and interfaces for distributing controls, identity and access management, and monitoring across systems and infrastructure. The aim is consistent risk reduction and traceable, auditable protection controls.
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Theoretical construct: explains a term, principle, or mental model.
What organizes, connects, or makes decisions possible.
Security architecture structures systems so that security goals, risks, and controls are embedded in their design.
Security architecture emerged as an application of architecture that connects protection requirements with system structure and operating models early. OWASP provides practical security guidance for this work.
It translates protection needs and threats into trust boundaries, identities, data flows, controls, and monitoring. Good architecture reduces risk structurally; it does not replace secure implementation or ongoing operations.
Security is designed as a property of system structure.
Threats and trust boundaries guide where controls are placed and how they work.
Architecture decisions must balance protection, function, cost, and operations.
Security architecture turns security requirements into durable structural and integration decisions.
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