Chapter 26 — Engineering Specification Taxonomy¶

26.1 Purpose¶

This chapter establishes the Engineering Specification Taxonomy of the Engineering Intelligence Platform.

The Engineering Specification Taxonomy provides a unified organizational framework for all Engineering Specifications governed under SP-000.

Its objectives are to ensure consistency, discoverability, traceability, and long-term maintainability across the Engineering Baseline.

26.2 Principles¶

The Engineering Specification Taxonomy shall adhere to the following principles:

Hierarchical organization
Unique identification
Functional classification
Controlled ownership
Lifecycle traceability
Scalability
Platform independence

The taxonomy shall remain stable while allowing controlled expansion.

26.3 Root Authority¶

The Engineering Specification Taxonomy is established through:

SP-000 — Engineering Specification Master Index

SP-000 shall be the single authoritative index governing all Engineering Specifications.

No Engineering Specification shall exist outside the SP-000 taxonomy.

26.4 Taxonomy Structure¶

Engineering Specifications shall be organized into functional domains.

Illustrative structure:

SP-000 Engineering Specification Master Index
│
├── SP-1xx Platform Architecture
│
├── SP-2xx Hardware Engineering
│
├── SP-3xx Software Engineering
│
├── SP-4xx AI & Intelligence
│
├── SP-5xx Security Engineering
│
├── SP-6xx Verification & Validation
│
├── SP-7xx Configuration Management
│
├── SP-8xx Operations & Deployment
│
└── SP-9xx Supporting Standards

Additional domains may be introduced through controlled engineering evolution.

26.5 Functional Domains¶

Typical functional domains include:

Platform Architecture¶

Defines platform-level architectural specifications.

Examples:

System Architecture
Platform Topology
Infrastructure Specifications

Hardware Engineering¶

Defines physical engineering specifications.

Examples:

PCB
Mechanical
Thermal
Electrical
Power

Software Engineering¶

Defines software implementation specifications.

Examples:

APIs
Runtime
Middleware
Services

AI Engineering¶

Defines Artificial Intelligence specifications.

Examples:

AI Runtime
AI Services
AI Models
AI Orchestration

Security Engineering¶

Defines platform security specifications.

Examples:

Identity
Authentication
Secure Boot
Cryptography
Trust Architecture

Verification¶

Defines engineering verification assets.

Examples:

Test Plans
Validation Procedures
Acceptance Criteria
Qualification

Configuration Management¶

Defines configuration governance.

Examples:

Baselines
Versioning
Change Control
Release Management

Operations¶

Defines deployment and operational specifications.

Examples:

Repository Governance
Toolchains
Deployment
Automation

26.6 Identification Rules¶

Each Engineering Specification shall possess:

Unique SP Identifier
Functional Domain
Version
Lifecycle State
Responsible Owner

Identifiers shall never be reused.

26.7 Taxonomy Evolution¶

The Engineering Specification Taxonomy may evolve by:

introducing new engineering domains;
refining functional classifications;
reorganizing engineering artefacts.

Such evolution shall occur under Engineering Baseline Governance.

Constitutional revision is not required unless governance itself is affected.

26.8 Relationship to Governance¶

The taxonomy is subordinate to:

Engineering Constitution
        │
        ▼
Approved Governance System
        │
        ▼
Engineering Baselines
        │
        ▼
Engineering Specification Taxonomy
        │
        ▼
Engineering Specifications

The taxonomy organizes Engineering Specifications but does not establish governance authority.

26.9 Chapter Summary¶

This chapter establishes the Engineering Specification Taxonomy as the organizational framework for all Engineering Specifications.

It confirms that:

SP-000 is the authoritative Engineering Specification index;
Engineering Specifications are organized into controlled functional domains;
identifiers remain globally unique;
taxonomy evolution occurs under Engineering Baseline Governance;
governance authority remains exclusively vested in the Engineering Constitution.