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VA Technical Reference Model v 24.4

NServiceBus Technology

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Technologies must be operated and maintained in accordance with Federal and Department security and privacy policies and guidelines. More information on the proper use of the TRM can be found on the TRM Proper Use Tab/Section.

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Description: NServiceBus is an enterprise service bus (ESB) that supports workflows and integrations in .NET. This technology uses event-driven and standards-based message-oriented middleware, provides publish and subscribe functionality, handles message queues, and provides remote procedure call capabilities. NServiceBus provides a generic host similar to generic application servers on the Java platform. The NServiceBus Host provides standardized installation and manageability as well as providing a lightweight sandbox where all infrastructure components automatically switch to in-memory mode.

NServiceBus may be built from source code or may be ran within the Particular Service Platform. The source code is provided via open source licensing and may be built with Microsoft Visual Studio. To run this technology within the Particular Service Platform, users must first purchase a license for the platform. When configured with the Particular Service Platform, there is a free trial option as well as the option to deploy NServiceBus on-premise, in the cloud, or as a hybrid solution.

This technology uses an Oracle Database and Microsoft SQL Server databases to store data.

The TRM decisions in this entry only apply to technologies and versions owned, operated, managed, patched, and version-controlled by VA. This includes technologies deployed as software installations on VMs within VA-controlled cloud environments (e.g. VA Enterprise Cloud (VAEC)). Cloud services provided by the VAEC, which are listed in the VAEC Service Catalog, and those controlled and managed by an external Cloud Service Provider (i.e. SaaS) are not in the purview of the TRM. For more information on the use of cloud services and cloud-based products within VA, including VA private clouds, please see the Enterprise Cloud Solutions Office (ECSO) Portal at:
Technology/Standard Usage Requirements: Users must ensure their use of this technology/standard is consistent with VA policies and standards, including, but not limited to, VA Handbooks 6102 and 6500; VA Directives 6004, 6513, and 6517; and National Institute of Standards and Technology (NIST) standards, including Federal Information Processing Standards (FIPS). Users must ensure sensitive data is properly protected in compliance with all VA regulations. Prior to use of this technology, users should check with their supervisor, Information Security Officer (ISO), Facility Chief Information Officer (CIO), or local Office of Information and Technology (OI&T) representative to ensure that all actions are consistent with current VA policies and procedures prior to implementation.
Section 508 Information: This technology has not been assessed by the Section 508 Office. The Implementer of this technology has the responsibility to ensure the version deployed is 508-compliant. Section 508 compliance may be reviewed by the Section 508 Office and appropriate remedial action required if necessary. For additional information or assistance regarding Section 508, please contact the Section 508 Office at
Decision: View Decisions

Decision Source: TRM Mgmt Group
Decision Process: One-VA TRM v23.10
Decision Date: 10/24/2023 at 01:34:29 UTC
Aliases: nServiceBus
Introduced By: TRM Request
Vendor Name: Particular Software
- The information contained on this page is accurate as of the Decision Date (10/24/2023 at 01:34:29 UTC).