public:99_annexes:annex-b-terms-and-definitions:a:actor

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public:99_annexes:annex-b-terms-and-definitions:a:actor [2026/09/12 17:42] – removed - external edit (Unknown date) 127.0.0.1public:99_annexes:annex-b-terms-and-definitions:a:actor [2026/09/12 17:43] (current) – ↷ Links adapted because of a move operation nick_dido
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 +====== Actor ======
  
 +[[public:99_annexes:annex-b-terms-and-definitions:start|Go up to Terms and Definitions]]
 +
 +===== Discussion =====
 +
 +An Actor is an identifiable participant that performs or can perform an action or [[public:99_annexes:annex-b-terms-and-definitions:r:role|Role]] within a defined context.
 +
 +An Actor can be:
 +
 +  * A person
 +  * A [[public:99_annexes:annex-b-terms-and-definitions:u:user|User]]
 +  * An [[public:99_annexes:annex-b-terms-and-definitions:o:organization|Organization]]
 +  * An organizational unit
 +  * A system
 +  * A service
 +  * A [[public:99_annexes:annex-b-terms-and-definitions:n:node|Node]]
 +  * An automated process
 +  * An external participant
 +  * Another identifiable participant capable of performing an action or Role
 +
 +An Actor can identify:
 +
 +  * Its identity
 +  * Its name
 +  * Its description
 +  * Its Actor type
 +  * Its assigned Roles
 +  * Its responsibilities
 +  * Its permitted actions
 +  * Its prohibited actions
 +  * Its applicable [[public:99_annexes:annex-b-terms-and-definitions:o:organization|Organizations]]
 +  * Its applicable [[public:99_annexes:annex-b-terms-and-definitions:g:governance_domain|Governance Domains]]
 +  * Its applicable [[public:99_annexes:annex-b-terms-and-definitions:p:policy|Policies]]
 +  * Its applicable [[public:99_annexes:annex-b-terms-and-definitions:g:governance_policy|Governance Policies]]
 +  * Its [[public:99_annexes:annex-b-terms-and-definitions:p:provenance|Provenance]]
 +  * Its [[public:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]]
 +
 +An Actor performs actions through one or more assigned Roles. The applicable Role establishes the responsibilities, permissions, and expected behaviors governing those actions.
 +
 +===== Definition =====
 +
 +//identifiable participant that performs or can perform an action or [[public:99_annexes:annex-b-terms-and-definitions:r:role|Role]] within a defined context//
 +
 +===== Source =====
 +
 +Adapted from:
 +
 +  * [[public:99_annexes:annex-b-terms-and-definitions:r:role|Role]]
 +  * DIDO Reference Architecture
 +  * DIDO Reference Implementation Conceptual Model
 +  * DIDO-TE draft Requirements Register
 +
 +===== Note =====
 +
 +An Actor differs from a [[public:99_annexes:annex-b-terms-and-definitions:r:role|Role]]:
 +
 +  * An Actor identifies the participant
 +  * A Role identifies the responsibilities, permissions, and expected behaviors assignable to the participant
 +
 +One Actor can perform multiple Roles. Multiple Actors can perform the same Role.
 +
 +An Actor differs from a [[public:99_annexes:annex-b-terms-and-definitions:u:user|User]]:
 +
 +  * An Actor performs an action or Role within a defined context
 +  * A User interacts with or uses a system, service, or Resource to achieve a purpose
 +
 +A User is an Actor when the User performs an action or Role. An Actor is not necessarily a User.
 +
 +An Actor differs from a [[public:99_annexes:annex-b-terms-and-definitions:n:node|Node]]:
 +
 +  * An Actor is any identifiable participant that performs an action or Role
 +  * A Node is an identifiable participant that performs one or more assigned Roles in a distributed system
 +
 +Every Node can act as an Actor. An Actor is not necessarily a Node.
 +
 +An Actor does not need to be human. Organizations, systems, services, Nodes, and automated processes can act as Actors.
 +
 +Identifying an Actor does not establish authority to perform every action. The applicable Role, authorization, Policy, and Governance Policy determine the permitted actions.
 +
 +===== Example =====
 +
 +A DIDO-TE validation process involves the following Actors:
 +
 +  * A User acting in the Test Operator Role
 +  * A Node acting in the Test Participant Role
 +  * A service acting in the Evidence Collection Role
 +  * A User acting in the Evaluator Role
 +  * An Organization acting as the Governing Authority
 +
 +Each Actor performs different actions according to its assigned Role and the applicable Governance Policies.
 +
 +----
 +
 +<WRAP centeralign>
 +© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
 +</WRAP>