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+====== Platform Specific Parameter ======
+[[public:99_annexes:annex-b-terms-and-definitions:start|Go to Terms and Definitions]]
+===== Discussion =====
+A Platform Specific Parameter supplies a value required to realize a platform-independent specification on a particular implementation platform.
+The parameter identifies implementation information that varies according to the selection:
+  * Cloud provider
+  * Operating system
+  * Virtualization platform
+  * Container platform
+  * Hardware architecture
+  * Network implementation
+  * Storage implementation
+  * Security service
+  * Deployment tool
+  * Runtime technology
+A Platform Specific Parameter may provide values such as:
+  * Machine type
+  * Processor architecture
+  * Operating-system image identifier
+  * Region or availability zone
+  * Network identifier
+  * Storage class
+  * Service endpoint
+  * Resource-provider identifier
+  * Package name
+  * Runtime version
+  * Platform-specific security setting
+Platform Specific Parameters allow a common [[public:99_annexes:annex-b-terms-and-definitions:i:infrastructure_blueprint|Infrastructure Blueprint]] or [[public:99_annexes:annex-b-terms-and-definitions:i:infrastructure_configuration|Infrastructure Configuration]] to remain independent of a particular implementation platform while supplying the values required for a specific deployment.
+A Platform Specific Parameter differs from a platform-independent configuration value:
+  * A platform-independent configuration value expresses infrastructure intent without dependence on a particular implementation technology
+  * A Platform Specific Parameter supplies implementation information required by the selected platform
+A Platform Specific Parameter also differs from an environment-specific parameter:
+  * A Platform Specific Parameter varies because of the selected implementation platform
+  * An environment-specific parameter varies because of the operational or development context, such as development, test, staging, or production
+A parameter may be both platform-specific and environment-specific when its value depends on both characteristics.
+===== Definition =====
+//parameter whose value depends on the implementation platform selected to realize a platform-independent specification//
+===== Source =====
+Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
+===== Note =====
+A Platform Specific Parameter should identify:
+  * The parameter name
+  * The expected value type
+  * The implementation platform to which it applies
+  * The specification element that consumes the value
+  * Any applicable constraints
+  * Any permitted or prohibited values
+Platform Specific Parameters should remain separate from reusable platform-independent content when practical.
+Separating the values allows the same Infrastructure Blueprint or Infrastructure Configuration to be mapped to different implementation platforms without embedding provider-specific information in the common specification.
+The term does not require a particular parameter format, configuration language, deployment tool, cloud provider, operating system, or implementation technology.
+===== Example =====
+An Infrastructure Blueprint specifies a compute resource without naming a cloud-provider machine type. A Platform Specific Parameter supplies the machine-type identifier required by the selected cloud platform during deployment.
+----
+<WRAP centeralign>
+© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
+</WRAP>