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+====== Distributed Network Topology ======
+[[public:99_annexes:annex-b-terms-and-definitions:start|Go to Terms and Definitions]]
+===== Discussion =====
+A Distributed Network Topology arranges multiple networked [[public:99_annexes:annex-b-terms-and-definitions:f:financial_node|Nodes]] so that the Nodes collectively provide the communication and coordination required by a [[public:99_annexes:annex-b-terms-and-definitions:d:distributed_system|Distributed System]].
+The topology distributes network participation across multiple Nodes rather than requiring all communication or coordination to pass through one central Node.
+Characteristics of a Distributed Network Topology include:
+  * Multiple interconnected Nodes
+  * Direct or indirect communication among participating Nodes
+  * Distribution of communication, processing, data, or coordination responsibilities
+  * Continued communication among remaining Nodes following the loss of a participating Node, when permitted by the governing architecture
+  * Absence of a single Node through which every network interaction must pass
+Participating Nodes do not need to perform identical functions or possess equal authority.
+The governing architecture assigns roles and responsibilities such as:
+  * Producing data
+  * Consuming data
+  * Routing messages
+  * Processing requests
+  * Storing data
+  * Replicating data
+  * Validating transactions
+  * Coordinating state
+  * Providing discovery
+  * Enforcing policy
+A Distributed Network Topology differs from a [[private:99_annexes:annex-b-terms-and-definitions:c:centralized_network_topology|Centralized Network Topology]], in which participating Nodes depend on a central Node for primary communication, coordination, processing, or access to authoritative data.
+A Distributed Network Topology also differs from a [[public:99_annexes:annex-b-terms-and-definitions:d:distributed_system|Distributed System]]:
+  * A Distributed Network Topology describes the arrangement and interconnection of Nodes
+  * A Distributed System describes the coordinated system behavior performed across those Nodes
+===== Definition =====
+//[[public:99_annexes:annex-b-terms-and-definitions:n:network_topology|network topology]] in which multiple interconnected [[public:99_annexes:annex-b-terms-and-definitions:f:financial_node|Nodes]] collectively provide communication and coordination without requiring every interaction to pass through a single central Node//
+===== Source =====
+  * DIDO Reference Architecture, Network Topology Taxonomy
+  * DIDO Reference Architecture, Distributed Network Topology
+  * Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
+===== Note =====
+A Distributed Network Topology does not require every Node to:
+  * Hold the same data
+  * Perform the same processing
+  * Communicate directly with every other Node
+  * Possess equal authority
+  * Provide the same services
+  * Remain continuously available
+The governing architecture determines:
+  * Node roles
+  * Communication paths
+  * Routing behavior
+  * Data distribution
+  * State coordination
+  * Redundancy
+  * Failure handling
+  * Discovery mechanisms
+  * Security controls
+  * Authority relationships
+A Distributed Network Topology can contain gateways, coordinators, directory services, or other specialized Nodes without becoming a Centralized Network Topology, provided those Nodes do not form a required central path for every network interaction.
+The term does not prescribe peer-to-peer protocols, blockchain, distributed ledgers, consensus algorithms, message brokers, cloud computing, or a particular transport protocol.
+===== Example =====
+A deployment-management network contains multiple Nodes that exchange deployment requests, status information, and results.
+Execution Nodes perform deployment operations, storage Nodes preserve records, and validation Nodes assess results. The Nodes perform different roles while participating in one Distributed Network Topology.
+Loss of one execution Node does not prevent the remaining Nodes from communicating or performing the operations permitted by the governing architecture.
+----
+<WRAP centeralign>
+© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
+</WRAP>