--- title: The 26 discipline operating library shelf: Operating model url: https://library.feedthejoe.com/operating-model/library-disciplines/ markdown: https://library.feedthejoe.com/operating-model/library-disciplines.md author: Joseph W. Anady publisher: THATDEVELOPERGUY LLC status: "Expansion: Source linked operating design" summary: 09-d26 · 9 September 2026. published: 2026-09-09 modified: 2026-10-14 release: 2026.09.12-g40 words: 461 cites: - https://library.feedthejoe.com/operating-model/00-operating-model/ - https://library.feedthejoe.com/operating-model/01-master-router/ - https://library.feedthejoe.com/operating-model/02-handoff-contracts/ - https://library.feedthejoe.com/operating-model/03-acceptance-and-independence/ - https://library.feedthejoe.com/operating-model/04-search-expertise-publishing/ - https://library.feedthejoe.com/operating-model/05-integration-guide/ - https://library.feedthejoe.com/disciplines/r01-site-reliability/ - https://library.feedthejoe.com/disciplines/r02-network-dns/ - https://library.feedthejoe.com/disciplines/r03-backend-web/ - https://library.feedthejoe.com/disciplines/r04-frontend-web/ - https://library.feedthejoe.com/disciplines/r05-browser-compatibility/ - https://library.feedthejoe.com/disciplines/r06-web-performance/ - https://library.feedthejoe.com/disciplines/r07-accessibility/ - https://library.feedthejoe.com/disciplines/r08-technical-seo/ - https://library.feedthejoe.com/disciplines/r09-information-architecture/ - https://library.feedthejoe.com/disciplines/r10-search-relevance-ir/ - https://library.feedthejoe.com/disciplines/r11-structured-data-knowledge-graph/ - https://library.feedthejoe.com/disciplines/r12-aeo-aio-geo/ - https://library.feedthejoe.com/disciplines/r13-content-strategy-seo-editor/ - https://library.feedthejoe.com/disciplines/r14-claims-auditor/ - https://library.feedthejoe.com/disciplines/r15-conversion-rate-optimization/ - https://library.feedthejoe.com/disciplines/r16-analytics-measurement/ - https://library.feedthejoe.com/disciplines/r17-email-deliverability/ - https://library.feedthejoe.com/disciplines/r18-local-seo-gbp/ - https://library.feedthejoe.com/disciplines/r19-digital-pr-authority/ - https://library.feedthejoe.com/disciplines/r20-application-security-privacy/ - https://library.feedthejoe.com/disciplines/r21-qa-sdet/ - https://library.feedthejoe.com/disciplines/r22-adversarial-red-team/ - https://library.feedthejoe.com/disciplines/r23-product-marketing-research/ - https://library.feedthejoe.com/disciplines/r24-solutions-architecture/ - https://library.feedthejoe.com/disciplines/r25-release-change-management/ - https://library.feedthejoe.com/disciplines/r26-independent-acceptance/ - https://library.feedthejoe.com/operating-model/discipline-expansion-report/ - https://library.feedthejoe.com/operating-model/discipline-source-register/ - https://library.feedthejoe.com/operating-model/disciplines-readme/ rights: © 2026 THATDEVELOPERGUY LLC. All rights reserved. --- # The 26 discipline operating library Version 2026.09.09-d26 · 9 September 2026. This expansion treats website reliability, networking, engineering, accessibility, SEO, AI search visibility, content, measurement and release assurance as distinct responsibilities within one coherent delivery process. The numbering preserves the user's exact 26 roles. These are **accountabilities and review lenses**, not an assertion that 26 separate employees or professional credentials exist. Google describes AEO/GEO work for its own generative Search as part of core SEO, not a completely isolated replacement discipline. Other providers have their own crawler and reporting controls. This operating model separates specialist work where that prevents mistakes while preserving shared foundations. [Google's AI optimization guidance](https://developers.google.com/search/docs/fundamentals/ai-optimization-guide). ## Start here 1. Read the [operating model](https://library.feedthejoe.com/operating-model/00-operating-model/) and [routing protocol](https://library.feedthejoe.com/operating-model/01-master-router/). 2. Fill the site facts template with verified facts; unknowns remain null. 3. Select one lead and the necessary consulted roles. Read their charters and the linked current framework modules. 4. Diagnose read only, record evidence and route ownership conflicts to R24. Use the [handoff contract](https://library.feedthejoe.com/operating-model/02-handoff-contracts/). 5. Apply the [acceptance and independence rules](https://library.feedthejoe.com/operating-model/03-acceptance-and-independence/) before any production or publication claim. 6. Build public expertise from the [publishing model](https://library.feedthejoe.com/operating-model/04-search-expertise-publishing/), not from internal role titles. The [integration guide](https://library.feedthejoe.com/operating-model/05-integration-guide/) explains how to put these instructions in the actual project used by Codex. Downloading this package alone changes no external repository, site or account. ## Exact role directory | ID | Accountable specialist | Public content brief | | --- | --- | --- | | R01 | [Site Reliability Engineer](https://library.feedthejoe.com/disciplines/r01-site-reliability/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r01-site-reliability/) | | R02 | [Network/DNS Engineer](https://library.feedthejoe.com/disciplines/r02-network-dns/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r02-network-dns/) | | R03 | [Backend Web Engineer](https://library.feedthejoe.com/disciplines/r03-backend-web/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r03-backend-web/) | | R04 | [Frontend Web Engineer](https://library.feedthejoe.com/disciplines/r04-frontend-web/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r04-frontend-web/) | | R05 | [Browser Compatibility Engineer](https://library.feedthejoe.com/disciplines/r05-browser-compatibility/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r05-browser-compatibility/) | | R06 | [Web Performance Engineer](https://library.feedthejoe.com/disciplines/r06-web-performance/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r06-web-performance/) | | R07 | [Accessibility Specialist](https://library.feedthejoe.com/disciplines/r07-accessibility/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r07-accessibility/) | | R08 | [Technical SEO Engineer](https://library.feedthejoe.com/disciplines/r08-technical-seo/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r08-technical-seo/) | | R09 | [Information Architect](https://library.feedthejoe.com/disciplines/r09-information-architecture/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r09-information-architecture/) | | R10 | [Search Relevance/IR Engineer](https://library.feedthejoe.com/disciplines/r10-search-relevance-ir/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r10-search-relevance-ir/) | | R11 | [Structured Data/Knowledge Graph Engineer](https://library.feedthejoe.com/disciplines/r11-structured-data-knowledge-graph/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r11-structured-data-knowledge-graph/) | | R12 | [AEO/AIO/GEO Engineer](https://library.feedthejoe.com/disciplines/r12-aeo-aio-geo/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r12-aeo-aio-geo/) | | R13 | [Content Strategist/SEO Editor](https://library.feedthejoe.com/disciplines/r13-content-strategy-seo-editor/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r13-content-strategy-seo-editor/) | | R14 | [Fact Checker/Claims Auditor](https://library.feedthejoe.com/disciplines/r14-claims-auditor/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r14-claims-auditor/) | | R15 | [Conversion Rate Optimization Specialist](https://library.feedthejoe.com/disciplines/r15-conversion-rate-optimization/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r15-conversion-rate-optimization/) | | R16 | [Analytics/Measurement Engineer](https://library.feedthejoe.com/disciplines/r16-analytics-measurement/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r16-analytics-measurement/) | | R17 | [Email Deliverability Engineer](https://library.feedthejoe.com/disciplines/r17-email-deliverability/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r17-email-deliverability/) | | R18 | [Local SEO/GBP Specialist](https://library.feedthejoe.com/disciplines/r18-local-seo-gbp/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r18-local-seo-gbp/) | | R19 | [Digital PR/Authority Specialist](https://library.feedthejoe.com/disciplines/r19-digital-pr-authority/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r19-digital-pr-authority/) | | R20 | [Application Security/Privacy Engineer](https://library.feedthejoe.com/disciplines/r20-application-security-privacy/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r20-application-security-privacy/) | | R21 | [QA/SDET Engineer](https://library.feedthejoe.com/disciplines/r21-qa-sdet/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r21-qa-sdet/) | | R22 | [Adversarial/Red Team Reviewer](https://library.feedthejoe.com/disciplines/r22-adversarial-red-team/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r22-adversarial-red-team/) | | R23 | [Product Marketing/Market Researcher](https://library.feedthejoe.com/disciplines/r23-product-marketing-research/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r23-product-marketing-research/) | | R24 | [Solutions Architect/Integrator](https://library.feedthejoe.com/disciplines/r24-solutions-architecture/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r24-solutions-architecture/) | | R25 | [Release/Change Manager](https://library.feedthejoe.com/disciplines/r25-release-change-management/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r25-release-change-management/) | | R26 | [Independent Acceptance Engineer](https://library.feedthejoe.com/disciplines/r26-independent-acceptance/) | [Evidence led brief](https://library.feedthejoe.com/disciplines/r26-independent-acceptance/) | ## Boundary and compatibility Existing commercial SEO tiers, pricing and names are unchanged. **Tier 13 remains retired; R13 is an editorial role, not a tier.** All 146 unique historical originals remain intact. Baseline legacy documents remain labeled as not fully fact checked. New source linked procedures do not certify every inherited sentence or code example. See the [expansion report](https://library.feedthejoe.com/operating-model/discipline-expansion-report/), [source register](https://library.feedthejoe.com/operating-model/discipline-source-register/) and [tools guide](https://library.feedthejoe.com/operating-model/disciplines-readme/) for exact changes, provenance and validation boundaries.