> For the complete documentation index, see [llms.txt](https://docs.therisk.global/organization/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.therisk.global/organization/systems/nxs-dss.md).

# NXS-DSS

NXS-DSS, the decision cases, scenarios, options and deliberation system of the Nexus ecosystem: purpose, rooms, inputs and outputs, areas, standards and boundaries.

{% hint style="info" %}
This page is generated from the twenty-system charters, the system profiles, the interface and authority registers, the room register, the areas of work, the systems article of the constitution set and the programme spine. Do not edit it in GitBook: change the source and export again.
{% endhint %}

**NXS-DSS** is one of the twenty systems of the Nexus ecosystem: the decision cases, scenarios, options and deliberation system. It is described here as a system of the ecosystem, with its purpose, its rooms, what it receives and provides, the areas it serves, the standards that apply and its boundaries.

## Purpose and context

Decision records, scenario analysis and tradeoff evidence. Its domain is decision support, scenario analysis, trade-offs and uncertainty. A typical setting is an infrastructure investment choice evaluated across climate and supply-chain scenarios.

## What it is the authority for

| Record             | What the system must keep                                                  |
| ------------------ | -------------------------------------------------------------------------- |
| decision case      | Bind the decision owner, alternatives, evidence and deadline.              |
| scenario refs      | Compare matched input cuts and preserve scenario lineage.                  |
| constraint set     | Do not convert a mandatory constraint into a negotiable preference weight. |
| preference profile | Record whose preferences apply and expose normalization and sensitivity.   |
| uncertainty model  | Declare parameter, structural and observational uncertainty separately.    |

## Rooms and areas of work

Every system has ten rooms: eight shared rooms, which work the same way across systems with this system's domain, and two specialist rooms.

| Room      | Kind       | Purpose                                                                                                                                         |
| --------- | ---------- | ----------------------------------------------------------------------------------------------------------------------------------------------- |
| Station   | Shared     | The system's home: posture of the system's own records, freshness, refusals and next actions; never a summary of another system's truth         |
| Mission   | Shared     | Mission and task work for the system's domain, linked to Universe missions and Project OS plans                                                 |
| Builder   | Shared     | Composition of the system's artifacts and configurations from admitted packages (NXS-STU, NXS-FAC and NXS-NXQ boundaries apply)                 |
| Maps      | Shared     | Spatial views of the system's records and NXS-GRX products, under the boundary licence gate                                                     |
| Data      | Shared     | The system's datasets, sources and lineage as NXS-GRX products or system-owned records                                                          |
| Commons   | Shared     | Shared methods, standards, templates and reusable artifacts, including Nexus Standards (NXS, a programme of the Nexus Consortium) participation |
| Reports   | Shared     | Reports and editions built from the system's evidence, with cutoffs and correction history                                                      |
| Knowledge | Shared     | Institutional knowledge, records, runbooks and learning linked to NXS-HUB                                                                       |
| Scenarios | Specialist | Records: scenario definition, assumption, scenario run, scenario comparison                                                                     |
| Decisions | Specialist | Records: decision case, decision option, criterion, appraisal run, recommendation                                                               |

**Kinds of work it carries:** Decision cases; Scenario studies; Scenario Comparison; Option Set; Optimization Result; Sensitivity Product; Decision Support Package; Capital investment appraisals; Infrastructure prioritisations; Site selections; Acquisition and divestment decisions; Adaptation pathways; Managed retreats and relocations; Policy option appraisals; Land-use plan alternatives; Participatory community plans; Strategic decision cases; Board scenario stress tests; Energy transition pathways; Technology architecture choices; Crisis course-of-action choices; Early-action trigger choices; Procurement and supplier choices; Continuity strategy choices; Insurance and risk-transfer choices; Disaster risk financing strategies; Portfolio budget allocations; Water allocations; Health system capacity choices; Food security and agricultural resource choices.

**This system in the Nexus model.** Generated from the Nexus Standards index and the programme spine; statuses are registry statuses, never adoption or certification.

|                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Descriptor                       | Decision cases, scenarios, options and deliberation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| In the programme                 | Built, simulated and prepared in the [Foundry pillar](/organization/programme/foundry.md); its records serve the other pillars through the handoffs of [the programme year](/organization/programme/the-programme-year.md), and the competent authority decides outside the programme.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| System profile                   | [NRS-S3](https://nexustandards.com/standards/nrs/#nrs-s3): NXS-DSS (Decision cases and deliberation) (status OPEN)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Nexus Risk Standards that apply  | 17 in 9 series: core: [NRS-C2](https://nexustandards.com/standards/nrs/#nrs-c2), [NRS-C5](https://nexustandards.com/standards/nrs/#nrs-c5), [NRS-C16](https://nexustandards.com/standards/nrs/#nrs-c16); development: [NRS-D1](https://nexustandards.com/standards/nrs/#nrs-d1), [NRS-D6](https://nexustandards.com/standards/nrs/#nrs-d6); programme: [NRS-E1](https://nexustandards.com/standards/nrs/#nrs-e1); finance: [NRS-F1](https://nexustandards.com/standards/nrs/#nrs-f1), [NRS-F3](https://nexustandards.com/standards/nrs/#nrs-f3), [NRS-F5](https://nexustandards.com/standards/nrs/#nrs-f5); intelligence: [NRS-I1](https://nexustandards.com/standards/nrs/#nrs-i1), [NRS-I7](https://nexustandards.com/standards/nrs/#nrs-i7); nexus-stream: [NRS-N7](https://nexustandards.com/standards/nrs/#nrs-n7); policy: [NRS-P1](https://nexustandards.com/standards/nrs/#nrs-p1), [NRS-P4](https://nexustandards.com/standards/nrs/#nrs-p4), [NRS-P8](https://nexustandards.com/standards/nrs/#nrs-p8); system: [NRS-S3](https://nexustandards.com/standards/nrs/#nrs-s3); cross-cutting: [NRS-X2](https://nexustandards.com/standards/nrs/#nrs-x2) |
| Nexus Reports technology streams | None                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |

## Inputs

What it receives, and from whom. Each interface carries its context (estate, tenant, workspace, purpose, jurisdiction, time and place) and is checked under the policy authority.

| From                                        | What it receives                                                      |
| ------------------------------------------- | --------------------------------------------------------------------- |
| [NXS-GRX](/organization/systems/nxs-grx.md) | evidence and scenario inputs; correction and supersession propagation |

## Outputs

What it provides, and to whom. Consumers read projections; the system stays the authority for its own records and their corrections.

| To                                          | What it provides                        |
| ------------------------------------------- | --------------------------------------- |
| [NXS-CMD](/organization/systems/nxs-cmd.md) | decision support package                |
| [NXS-NSF](/organization/systems/nxs-nsf.md) | authorization/policy evaluation request |
| the evidence fabric                         | append consequential receipt/evidence   |

## Interfaces with other systems

Beyond its interfaces, it relies on fact families owned elsewhere: context history root (the time-and-place context fabric).

## Areas it serves

| Area                                                        | Category    | What the area covers                                            |
| ----------------------------------------------------------- | ----------- | --------------------------------------------------------------- |
| [Enterprise risk](/organization/systems/areas.md)           | Management  | Risk governance, appetite and oversight across institutions     |
| [Business continuity](/organization/systems/areas.md)       | Management  | Keep essential services running through disruption              |
| [Crisis management](/organization/systems/areas.md)         | Management  | Decision-making and coordination when events escalate           |
| [Exercises](/organization/systems/areas.md)                 | Management  | Scenario exercises that test decisions before a crisis          |
| [Risk assessment](/organization/systems/areas.md)           | Research    | Multi-hazard national baselines, dependencies and evidence gaps |
| [Climate risk](/organization/systems/areas.md)              | Research    | Physical climate hazards, scenarios and impacts by place        |
| [Systemic risk](/organization/systems/areas.md)             | Research    | Cascades and interdependencies across critical systems          |
| [Foresight](/organization/systems/areas.md)                 | Research    | Emerging risks, horizon scanning and long-term scenarios        |
| [Infrastructure resilience](/organization/systems/areas.md) | Technology  | Energy, water, transport and essential services                 |
| [Disaster finance](/organization/systems/areas.md)          | Finance     | Pre-arranged finance and contingent liabilities                 |
| [Insurance resilience](/organization/systems/areas.md)      | Finance     | Protection gaps and risk transfer questions                     |
| [Stress testing](/organization/systems/areas.md)            | Finance     | Climate, cyber and operational shocks to exposures              |
| [Sustainable finance](/organization/systems/areas.md)       | Finance     | Disclosure, taxonomies and resilience investment evidence       |
| [Capital resilience](/organization/systems/areas.md)        | Finance     | Long-horizon evidence for pensions and public funds             |
| [Risk reduction](/organization/systems/areas.md)            | Policy      | National disaster risk reduction strategy and targets           |
| [Climate adaptation](/organization/systems/areas.md)        | Policy      | Adaptation planning, finance and progress tracking              |
| [Health security](/organization/systems/areas.md)           | Policy      | Epidemic preparedness and health-system resilience              |
| [Development finance](/organization/systems/areas.md)       | Development | Resilience project preparation with development banks           |
| [Resilient recovery](/organization/systems/areas.md)        | Development | Loss and damage, recovery and building back better              |

## Standards that apply

Every record of the system is identified through the UNI identifier fabric of Nexus Standards (NS-1), and its public name follows the Nexus Standards naming rules. The areas it serves reference these external standards; naming a standard records where it is referenced and is not a claim of certification, accreditation, conformance or endorsement.

| Standard                                                                                   | Issuer                                                                  | Year | Use                                                         |
| ------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------- | ---- | ----------------------------------------------------------- |
| ISO 31000 Risk management, Guidelines                                                      | International Organization for Standardization (ISO)                    | 2018 | Principles, framework and process                           |
| Enterprise Risk Management, Integrating with Strategy and Performance                      | Committee of Sponsoring Organizations of the Treadway Commission (COSO) | 2017 | Linking risk appetite to strategy and performance           |
| Recommendation on the Governance of Critical Risks                                         | Organisation for Economic Co-operation and Development (OECD)           | 2014 | Whole-of-government governance of critical risks            |
| Sendai Framework for Disaster Risk Reduction 2015-2030, Priority 2                         | United Nations Office for Disaster Risk Reduction (UNDRR)               | 2015 | Strengthening disaster risk governance                      |
| ISO 22301 Business continuity management systems, Requirements                             | ISO                                                                     | 2019 | Management-system requirements                              |
| ISO 22313 Business continuity management systems, Guidance                                 | ISO                                                                     | 2020 | Practical guidance for implementation                       |
| Principles for Operational Resilience                                                      | Basel Committee on Banking Supervision (BCBS)                           | 2021 | Operational resilience for banks                            |
| Digital Operational Resilience Act, Regulation (EU) 2022/2554                              | European Union                                                          | 2022 | ICT resilience for EU financial entities, applied from 2025 |
| ISO 22361 Security and resilience, Crisis management, Guidelines                           | ISO                                                                     | 2022 | Crisis capability and decision-making                       |
| ISO 22320 Emergency management, Guidelines for incident management                         | ISO                                                                     | 2018 | Incident command and coordination                           |
| National Incident Management System, third edition                                         | United States Federal Emergency Management Agency (FEMA)                | 2017 | Comparator for scalable incident structures                 |
| Homeland Security Exercise and Evaluation Program (HSEEP)                                  | FEMA                                                                    | 2020 | Design, conduct, evaluation and improvement                 |
| WHO Simulation Exercise Manual                                                             | World Health Organization (WHO)                                         | 2017 | Health-emergency exercise types                             |
| ISO 22301, clause 8.5 (exercising and testing)                                             | ISO                                                                     | 2019 | Exercising continuity arrangements                          |
| IEC 31010 Risk management, Risk assessment techniques                                      | International Electrotechnical Commission and ISO (IEC/ISO)             | 2019 | Choosing assessment techniques                              |
| IPCC Sixth Assessment Report, Working Group II                                             | Intergovernmental Panel on Climate Change (IPCC)                        | 2022 | Risk as hazard, exposure, vulnerability and response        |
| Words into Action: National Disaster Risk Assessment                                       | UNDRR                                                                   | 2017 | National assessment process                                 |
| IPCC Sixth Assessment Report, Synthesis Report                                             | IPCC                                                                    | 2023 | Assessed climate science and risk                           |
| Coupled Model Intercomparison Project Phase 6 (CMIP6)                                      | World Climate Research Programme (WCRP)                                 | 2016 | Climate model ensemble design                               |
| Shared Socioeconomic Pathways (SSPs)                                                       | Integrated assessment research community                                | 2017 | Socioeconomic scenario framework                            |
| Global Assessment Report on Disaster Risk Reduction 2019                                   | UNDRR                                                                   | 2019 | Systemic risk framing                                       |
| Guidelines for the Governance of Systemic Risks                                            | International Risk Governance Center (IRGC)                             | 2018 | Governance of systemic risks                                |
| ISO 31050 Guidance for managing emerging risks to enhance resilience                       | ISO                                                                     | 2023 | Emerging-risk management                                    |
| Declaration on Future Generations                                                          | United Nations General Assembly                                         | 2024 | Long-term thinking in policy                                |
| Strategic Foresight for Better Policies                                                    | OECD                                                                    | 2019 | Foresight in government practice                            |
| Principles for Resilient Infrastructure                                                    | UNDRR                                                                   | 2022 | Six principles for resilient systems                        |
| ISO 37123 Indicators for resilient cities                                                  | ISO                                                                     | 2019 | Measuring urban resilience                                  |
| IEC 62443 Industrial communication networks, security                                      | IEC                                                                     | 2018 | Security of control systems                                 |
| G20/OECD Framework on Disaster Risk Assessment and Risk Financing                          | G20 and OECD                                                            | 2012 | Government approach to risk financing                       |
| Global Shield against Climate Risks                                                        | V20 group and G7                                                        | 2022 | Pre-arranged finance for vulnerable countries               |
| Sendai Framework 2015-2030, Priority 3                                                     | UNDRR                                                                   | 2015 | Investing in disaster risk reduction                        |
| Insurance Core Principles                                                                  | International Association of Insurance Supervisors (IAIS)               | 2019 | Supervisory context for insurance markets                   |
| Application Paper on the Supervision of Climate-related Risks in the Insurance Sector      | IAIS                                                                    | 2021 | Climate risk in insurance supervision                       |
| Insurance Development Forum                                                                | Public-private partnership of insurers and international organisations  | 2015 | Comparator for protection-gap collaboration                 |
| Principles for the effective management and supervision of climate-related financial risks | Basel Committee on Banking Supervision (BCBS)                           | 2022 | Supervisory expectations for banks                          |
| NGFS climate scenarios                                                                     | Network for Greening the Financial System (NGFS)                        | 2020 | Common scenario framework                                   |
| Climate risk stress test                                                                   | European Central Bank (ECB)                                             | 2022 | Comparator for supervisory design                           |
| IFRS S1 and IFRS S2 Sustainability and climate-related disclosures                         | International Sustainability Standards Board (ISSB)                     | 2023 | Global baseline for disclosure                              |
| Recommendations of the Taskforce on Nature-related Financial Disclosures                   | Taskforce on Nature-related Financial Disclosures (TNFD)                | 2023 | Nature-related risk disclosure                              |
| Taxonomy Regulation, Regulation (EU) 2020/852                                              | European Union                                                          | 2020 | Classification of sustainable activities                    |
| Recommendations of the Task Force on Climate-related Financial Disclosures                 | Financial Stability Board (FSB)                                         | 2017 | Foundation of climate disclosure                            |
| Principles for Responsible Investment                                                      | PRI, with UNEP FI and the UN Global Compact                             | 2006 | Incorporating material risks                                |
| Santiago Principles                                                                        | International Forum of Sovereign Wealth Funds (IFSWF)                   | 2008 | Governance of sovereign funds                               |
| G20/OECD Principles of Corporate Governance                                                | OECD                                                                    | 2023 | Board oversight of sustainability risks                     |
| Sendai Framework for Disaster Risk Reduction 2015-2030                                     | United Nations                                                          | 2015 | Seven global targets                                        |
| Political Declaration of the Midterm Review of the Sendai Framework                        | United Nations General Assembly                                         | 2023 | Priorities to 2030                                          |
| Global Assessment Report                                                                   | UNDRR                                                                   | 2025 | Global evidence on risk and resilience                      |
| Paris Agreement, Article 7                                                                 | United Nations Framework Convention on Climate Change (UNFCCC)          | 2015 | Global goal on adaptation                                   |
| UAE Framework for Global Climate Resilience                                                | UNFCCC, COP28                                                           | 2023 | Targets for adaptation progress                             |
| National Adaptation Plan process (Cancun Adaptation Framework)                             | UNFCCC                                                                  | 2010 | Planning process for adaptation                             |
| International Health Regulations (2005), amendments adopted 2024                           | World Health Organization (WHO)                                         | 2024 | International health law framework                          |
| WHO Pandemic Agreement                                                                     | World Health Assembly                                                   | 2025 | Pandemic prevention, preparedness and response              |
| Joint External Evaluation tool, third edition                                              | WHO                                                                     | 2022 | Assessing core health-security capacities                   |
| One Health Joint Plan of Action                                                            | FAO, UNEP, WHO and WOAH (Quadripartite)                                 | 2022 | Human, animal and environmental health                      |
| Environmental and Social Framework                                                         | World Bank                                                              | 2018 | Safeguards and stakeholder engagement                       |
| Performance Standards on Environmental and Social Sustainability                           | International Finance Corporation (IFC)                                 | 2012 | Private-sector project standards                            |
| Equator Principles 4                                                                       | Equator Principles Association                                          | 2020 | Project-finance risk management                             |
| Post-Disaster Needs Assessment guidelines                                                  | European Union, United Nations and World Bank                           | 2013 | Joint assessment methodology                                |
| Fund for responding to Loss and Damage, operationalised                                    | UNFCCC, COP28                                                           | 2023 | Loss and damage finance architecture                        |
| Santiago network for averting, minimizing and addressing loss and damage                   | UNFCCC                                                                  | 2019 | Technical assistance for loss and damage                    |
| Sendai Framework 2015-2030, Priority 4 (Build Back Better)                                 | UNDRR                                                                   | 2015 | Safer recovery and reconstruction                           |

## In the programme

| Pillar                                                | Room      | What happens there                           |
| ----------------------------------------------------- | --------- | -------------------------------------------- |
| [Nexus Universe](/organization/programme/universe.md) | Scenarios | Mission scenarios and option analysis        |
| [Nexus Universe](/organization/programme/universe.md) | Decisions | Decision cases for admission and go or no-go |

## Governance boundaries

Policy authority for the system sits with [NXS-NSF](/organization/systems/nxs-nsf.md); identifiers come from the UNI identifier fabric. The system exports read projections and commands through typed contracts, and no other system writes its records.

It does not own, and never stands in for:

* official decisions (human institutions)
* coordination (NXS-NXS-NST)

**Method boundary.** Use matched scenario comparisons, hard-constraint filtering and transparent preference aggregation. Sensitivity and robustness are required; a single optimized score is not a decision authority. Do not hide a mandatory constraint in a weighted score or present a preferred option as enacted.

[All twenty systems](/organization/systems.md) · [Areas](/organization/systems/areas.md)

***

*Generated page. It records names, roles and design for reading, not readiness: release is on hold, and nothing here is presented as ready, certified or official.*


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