NDVAS — Nordax Digital Visibility Architecture Specification

Version: 1.4.1 · Updated: October 19, 2026 · Author: Alexz Shepherd · Access: Public Level 1

What is NDVAS?

NDVAS is the Nordax Digital Visibility Architecture Specification: our implementation standard for website structure, performance, accessibility, business identity, and machine-readable information.

The public specification contains 20 implementation areas and 118 requirements. Requirements are selected for the project, implemented, and checked with evidence. Publishing a specification or adding schema does not guarantee indexing, rankings, AI citations, or inclusion in a knowledge panel.

Read or download the current public specification

What changed in v1.4.1?

This technical revision clarifies implementation requirements and their limits:

Search indexing, AI search retrieval, model training, and user-initiated retrieval have different controls.
Optional llms.txt files are for systems that consume them; they are not a Google ranking requirement.
Structured data must describe the business and visible page content accurately. Identity links identify the same entity.
Performance thresholds, accessibility checks, local business eligibility, review practices, and source attribution require appropriate evidence.
External outcomes are observed and reported; they are not guaranteed by implementing the specification.

Public implementation areas

01. Security & trust signals

Protect visitors and make the website a dependable destination.

Read the implementation requirements

02. Core metadata architecture

Give each indexable page a clear identity and accurate previews.

Read the implementation requirements

03. Structured data implementation

Describe real businesses and content with accurate, connected records.

Read the implementation requirements

04. Search & AI crawler policies

Make deliberate decisions about search discovery, retrieval, and training.

Read the implementation requirements

05. Crawlability, indexation & crawl health

Keep public pages discoverable and private systems protected.

Read the implementation requirements

06. Performance & Core Web Vitals

Set measurable performance budgets and preserve usable content.

Read the implementation requirements

07. Image & visual search optimization

Make real imagery useful, accessible, and efficient.

Read the implementation requirements

08. Content structure, semantics & demonstrated expertise

Make content clear to people and to machines that process it.

Read the implementation requirements

09. Content clusters & topical architecture

Connect relevant material so readers can explore a subject.

Read the implementation requirements

10. Answer clarity & generative search readiness

Make supported answers easy to find and understand.

Read the implementation requirements

11. Canonical authority control

Maintain a coherent public URL structure.

Read the implementation requirements

12. Knowledge graph & entity signals

Describe the business as a consistent, identifiable entity.

Read the implementation requirements

13. Local & multi-location architecture

Represent genuine places and service areas accurately.

Read the implementation requirements

14. International SEO

Connect equivalent language and regional experiences.

Read the implementation requirements

15. Accessibility & inclusive design

Make essential content and interactions usable across access needs.

Read the implementation requirements

16. Digital PR & earned authority

Earn relevant attention through useful work and credible evidence.

Read the implementation requirements

17. AI interpretation & ongoing observation

Maintain reliable information and evaluate actual discovery behavior.

Read the implementation requirements

18. NIST alignment

Make any framework mapping explicit and reviewable.

Read the implementation requirements

19. Deployment validation

Confirm the agreed implementation with reproducible evidence.

Read the implementation requirements

20. Nordax Digital compliance standard

State what conformance covers and who maintains it.

Read the implementation requirements

Level access

Level	Scope	Access
Level 1	Foundational Visibility Architecture	Public
Level 2	Autonomous Visibility Architecture	Internal / confidential
Level 3	Autonomous Authority Infrastructure	Internal / confidential

Only Level 1 is distributed through the public website and this Help Center. Levels 2 and 3 are internal standards; their implementation documents and downloads are not published here.

Questions and answers

Who created NDVAS?

NDVAS was created by Alexz Shepherd at Nordax Digital. Level 1 is published as a reference for the websites we build and maintain.

What are the three levels?

Level 1 is Foundational Visibility Architecture. Level 2 is Autonomous Visibility Architecture, covering ongoing maintenance. Level 3 is Autonomous Authority Infrastructure, covering managed entity infrastructure, integrations, and observation.

Which parts are public?

The Level 1 specification is public. The detailed Level 2 and Level 3 implementation standards remain internal. Public summaries explain their scope without publishing their confidential requirements.

Does NDVAS guarantee rankings or AI citations?

No. NDVAS defines implementation and validation requirements. Search engines and AI systems decide what to index, surface, or cite; meeting a technical standard does not guarantee those outcomes.

Is NDVAS endorsed by NIST?

No. NIST has not validated, certified, or endorsed NDVAS. Any NIST alignment claim must be supported by a scoped, documented mapping to the relevant guidance.

Sources and references

The current public specification includes the source references used for its implementation guidance. Review the linked primary documentation when applying a requirement.