Introduction

A Rationale provides the logical reasoning behind a strategic or operational response. It connects a specific condition (Trigger) to a reasoned explanation that guides actions across one or more business architecture domains. Rationales are formalized objects in the Strategic Response Model and are central to decision transparency and traceability. Strategic Response Model

Rationales help ensure that every action taken by the organization is grounded in strategic intent and can be clearly explained through a documented reasoning process.

Every Rationale must reference the Trigger that prompted it. This is represented by linking to a triggerID. This linkage ensures traceability from external condition through to internal response.

Rationales may arise from various considerations in response to triggers, including risk assessment, compliance requirements, strategic opportunities, or performance insights.

Usage in Business Architecture

In the Orthogramic Metamodel, rationales serve to:

Rationales may be connected to multiple elements across the business architecture, including:

Relationship to Strategic Response Model

Each rationale bridges the gap between a trigger event and organizational action. While triggers explain what happened to prompt a response, rationales explain why we're responding in this specific way.

Rationale Classification Framework

Rationales in the Orthogramic Metamodel follow a structured classification system that supports analytics, reuse, and auditability. Each rationale is categorized according to:

  1. Rationale Type: The response category (Preventative, Remedial, Opportunistic, etc.)

  2. Reasoning Pattern: The logical structure of the rationale (Causal, Comparative, Normative, etc.)

  3. Evidence Base: The foundation for the rationale (Data-driven, Expert judgment, Industry best practice, etc.)

  4. Strategic Objective Reference: Direct link to the strategic objective this rationale supports

  5. Business Value Type: The nature of value creation or preservation (Cost reduction, Revenue growth, Risk reduction, etc.)

This classification framework enables organizations to:

Key Distinctions Between Triggers and Rationales

It's important to understand the relationship between Triggers and Rationales:

A single Trigger (e.g., "New Safety Regulation") might prompt multiple Rationales with different types:

Implementation Guidance

Relationship with Domains

Rationales bridge between Triggers and organizational responses across multiple domains:

Schema properties

Field

Type

Required

Description

Example

rationaleID

string (uuid)

Yes

Unique identifier for the rationale

"7a98e34d-f2b4-4ad1-9ac9-ecda9f145d79"

rationaleTitle

string

Yes

Title or summary of the rationale

"Responding to new safety regulation"

description

string

Yes

Detailed explanation supporting a strategic response

"The new regulation requires immediate updates to inspection protocols"

triggerReference

string (uuid)

Yes

Primary trigger this rationale responds to

"uuid-of-trigger"

triggerReferences

array of uuid

No

Optional multiple triggers this rationale addresses

["uuid-1", "uuid-2"]

linkedDomains

array of enum

No

Business architecture domains influenced or justified by this rationale

["Policy", "Performance"]

rationaleType

string (enum)

Yes

The justification type for this rationale

"Compliance_Fulfillment"

reasoningPattern

string (enum)

No

The logical structure of the rationale

"Deductive"

evidenceBase

string (enum)

No

The foundation for the rationale

"External_Research"

strategicObjectiveReference

string (uuid)

No

Reference to the strategic objective this rationale supports

"uuid-of-objective"

businessValueType

string (enum)

No

The nature of value creation or preservation

"Risk_Reduction"

dateCreated

string (date)

No

The date the rationale was first recorded

"2025-04-20"

lastReviewed

string (date)

No

The most recent date of rationale review

"2025-06-01"

effectivenessRating

integer (1–5)

No

Optional evaluation of rationale effectiveness

4

author

string

No

The person or team who documented the rationale

"Business Architecture Team"

orgUnitTitle

string

No

The organisational unit that owns or authored the rationale

"Regulatory Compliance Division"

relatedRationales

array of uuid

No

References to other related rationales

["uuid-1", "uuid-2"]

relationshipTypes

array of enum

No

Type of relationship with each related rationale

["supports", "supersedes"]

This schema supports structured reasoning and traceability across strategy, policy, and initiative development, ensuring that every response is grounded in a documented rationale that bridges from trigger events to strategic objectives.