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+====== Infrastructure ======
+[[public:99_annexes:annex-b-terms-and-definitions:start|Go to Terms and Definitions]]
+===== Discussion =====
+Infrastructure comprises the physical, virtual, software-defined, and supporting technical resources required to host, connect, operate, secure, and manage systems, applications, and services.
+Infrastructure includes resources such as:
+  * Compute resources
+  * Storage resources
+  * Network resources
+  * Physical servers
+  * Virtual machines
+  * Containers
+  * Operating systems
+  * Runtime platforms
+  * Load balancers
+  * Firewalls
+  * Identity and access services
+  * Monitoring services
+  * Management services
+  * Supporting facilities and devices
+Infrastructure differs from an [[public:99_annexes:annex-b-terms-and-definitions:i:infrastructure_resource|Infrastructure Resource]]:
+  * Infrastructure identifies the collective technical foundation
+  * An Infrastructure Resource identifies an individual resource within that foundation
+Infrastructure also differs from an [[public:99_annexes:annex-b-terms-and-definitions:i:infrastructure_environment|Infrastructure Environment]]:
+  * Infrastructure identifies the technical resources and supporting capabilities
+  * An Infrastructure Environment organizes selected Infrastructure Resources, configurations, relationships, and controls into an operational context
+Infrastructure can exist as:
+  * Physical infrastructure
+  * Virtual infrastructure
+  * Cloud infrastructure
+  * On-premises infrastructure
+  * Edge infrastructure
+  * Software-defined infrastructure
+  * Hybrid infrastructure
+The governing architecture determines which resources and supporting capabilities form the Infrastructure for a particular system or environment.
+===== Definition =====
+//collective physical, virtual, software-defined, and supporting technical resources used to host, connect, operate, secure, and manage systems, applications, or services//
+===== Source =====
+Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
+===== Note =====
+Infrastructure does not include the business functions, mission objectives, or application-specific behavior that the Infrastructure supports.
+Infrastructure does not require a particular:
+  * Deployment platform
+  * Cloud provider
+  * Operating system
+  * Virtualization technology
+  * Container technology
+  * Network architecture
+  * Management tool
+  * Security product
+A specification should use the more precise term [[public:99_annexes:annex-b-terms-and-definitions:i:infrastructure_resource|Infrastructure Resource]] when referring to an individually identifiable resource.
+A specification should use [[public:99_annexes:annex-b-terms-and-definitions:i:infrastructure_environment|Infrastructure Environment]] when referring to an operationally organized collection of Infrastructure Resources, configurations, relationships, and controls.
+===== Example =====
+The Infrastructure for a deployed service consists of compute nodes, network segments, encrypted storage, an operating system, a container runtime, identity services, monitoring services, and supporting management components.
+A [[public:99_annexes:annex-b-terms-and-definitions:d:declarative_configuration|Declarative Configuration]] defines the Infrastructure required for the service without prescribing the procedural sequence used to create it.
+----
+<WRAP centeralign>
+© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
+</WRAP>