Practitioner Framework · Enterprise Architecture

Architecture That
Fits Its Purpose.
No More. No Less.

The dominant failure in Enterprise Architecture is not incompetence — it is misalignment. The Fit-for-Purpose concept is a practitioner framework built on 25+ years of field experience to configure every architectural engagement precisely to its context.

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Fit for Purpose Enterprise Architecture
Now Available
ISBN 978-616-631-596-7 · First Edition 2026

The Practitioner's Position

EA Keeps Failing for the Same Reasons

After two decades of field work across 40 country entities, the failures cluster around patterns — not around incompetence, not around the wrong framework, and not around insufficient documentation. They cluster around asking the wrong question in the first place.

"The architecture team answered the question they were asked — which was the wrong question."
The Wrong Question
"A complete framework is not the goal. A decision enabled at the right moment is the goal."
Completeness Is Not the Gold
"The architect does not own the outcome. The sponsor does — which means the sponsor must be engaged from the start, not consulted at the end."
The Sponsor Owns the Outcome
Why This Matters Now · Agentic AI
AI makes Enterprise Architecture more necessary — not less

The arrival of Agentic AI — systems that take autonomous actions inside organizational processes — raises the architectural stakes significantly. If your architecture governance is not clear about decision rights, accountability, and system boundaries before AI agents start operating, you will discover those gaps the hard way. The organizations that will use Agentic AI well are the ones that have already asked the right architectural questions.

Why This Matters Now · Thai Market
The Thai market is one cycle behind on EA maturity — which is an opportunity

Enterprise Architecture practice in Thailand is maturing rapidly, but most organizations are still treating EA as compliance documentation rather than decision-enabling infrastructure. The organizations that make the shift now — from comprehensive models to fit-for-purpose engagement — will build a structural advantage before the market catches up. The framework exists. The field experience exists. The question is whether your organization is ready to apply it.

The Foundation

Three Pillars of Fit-for-Purpose Architecture

The Fit-for-Purpose concept rests on three governing propositions — each addressing a distinct dimension of architectural failure.

Pillar 01
Concern-Driven
Architecture Exists to Resolve Concerns

Architecture exists to resolve specific stakeholder concerns, not to produce comprehensive documentation as an end in itself. Every architectural effort must be traceable to a concrete business question that requires answering or a decision that requires enabling.

Diagnostic question: What specific business decisions are currently blocked?
Pillar 02
Right-Sized Granularity
Just Enough, Just in Time

The appropriate level of architectural detail is the minimum required to enable correct implementation without ambiguity — and that level is determined by context, not by convention. There is no universally correct level of granularity.

Diagnostic question: What is the minimum detail that removes implementation ambiguity?
Pillar 03
Value-to-Effort Ratio
Every Engagement Is an Investment

The business value of the architectural information produced must always exceed the cost — in time and resources — invested in creating it. Architecture that costs more to produce than the value it enables is not merely inefficient; it is counterproductive.

Diagnostic question: Is the cost proportionate to the value of the decision being enabled?
The Conceptual Equation

The Optimization Objective of Every Architectural Engagement

Fit for Purpose =
Addressed Concerns × Decision Enablement
Granularity Level × Effort Expended
Sample A — Low Score (Over-Engineered)
12 weeks. Comprehensive model. Filed and never used.

A business unit needed a funding decision in 6 weeks about 5 capability areas. The team delivered a complete 37-capability model 2 weeks after the budget cycle closed. Three stakeholders attended the readout. High cost, zero value.

Sample B — High Score (Fit-for-Purpose)
1 week of focus. Three targeted briefs. Decision made in week 4.

The architect identified the three specific concerns blocking the investment decision and produced a targeted heat map with a one-page decision brief for each. Low cost, high value. The investment decision was made on time, fully informed.

The Engagement Framework

Six Engagement Archetypes

Enterprise Architecture engagements, despite their enormous variety, cluster around six recognizable patterns. Naming which archetype applies is the foundational step in configuring an engagement correctly.

01 · Supporting Strategy 02 · Landscape Portfolio 03 · Project Portfolio 04 · Foundational Change 05 · Bounded Change 06 · Implementation Governance

Each archetype carries its own critical success factors and configuration approach — covered in full in the book, the Udemy course, and the CAT-2 training programme.

The Method

The Three-Axis Tailoring Model

Effective tailoring is conducted across three distinct but interrelated axes.

01
Architecture Engagement
"What is the objective?"
02
Architecture Capability
"How ready is the organization?"
03
Architecture Content
"What must be delivered?"

How each axis is configured — and how the three combine on a real engagement — is covered in full in the book and the CAT-2 training programme.

The Diagnostic Framework

18 Failure Patterns. Specific Remedies.

The only EA practitioner framework with a structured diagnostic taxonomy — 18 named failure patterns, organized by their primary tailoring axis root cause.

18
Named Patterns
3
Root-Cause Axes
3
Checkpoints — Initiation, Midpoint, Closure
Applied at engagement initiation, midpoint, and closure — the full 18-pattern checklist with specific remedies (Appendix E of the book) converts retrospective analysis into active risk management. The complete taxonomy is covered in the book, the Udemy course, and CON-1 diagnostic engagements.
Udemy Course — Now Live

Learn the Framework.
Then Apply It.

The learning hierarchy: The book gives you the complete framework. The Udemy course gives you a structured introduction to applying it — with worked examples and a certificate of completion. The training programmes and consulting engagements are where the framework gets applied to your organization's real challenges, with me alongside you. The book and course are the foundation. The services are the practice.

The Fit-for-Purpose EA course on Udemy translates the book's practitioner framework into structured learning — from the three pillars through all six engagement archetypes and the 18-pattern diagnostic, with worked scenarios throughout.

  • The Three-Axis Tailoring Model applied in practice
  • All six engagement archetypes with worked scenarios
  • The 18-pattern failure diagnostic with specific remedies
  • ADM as a thinking model, not a workflow
  • Certificate of completion from Udemy
Enroll on Udemy
Fit-for-Purpose Enterprise Architecture
A Practitioner's Course · Dr. Raschada Nootjarat
6Archetypes
18Patterns
25+Yrs Exp.

Designed for practicing Enterprise Architects, Architecture Leaders, and executives who want a structured introduction to the Fit-for-Purpose framework before applying it in their organization.

View course on Udemy →

For Organizations

Bring Fit-for-Purpose
to Your Team

The book and course introduce the framework. The training programmes and consulting services are where it gets applied to your organization's actual architecture challenges — with the same calibre of expertise you would expect from the leading consulting firms, delivered personally by the person who built the framework.

  • Four training programmes — from a one-day executive strategy session to a two-day transformation programme with live applied workshop
  • Five consulting services — EA diagnostic, governance design, ongoing advisory, EA × Agentic AI advisory, and architecture decision support
  • Every engagement delivered personally by Dr. Raschada — no associates, no substitutes
  • Suitable for corporate teams, government institutions, and organizations of any size
View Services & Submit Enquiry →
On-site: Bangkok Metropolitan Area · Virtual: Nationwide & international
Training Programmes (CAT-1 to CAT-4)

One-day to two-day programmes. Executive strategy session, practitioner intensive, governance workshop, or a full transformation programme. On-site or virtual.

Consulting Services (CON-1 to CON-5)

EA diagnostic, governance design, ongoing advisory retainer, EA × Agentic AI advisory, and architecture decision support. All enquiry-based, all delivered personally.

Get the Books

Order Your Copy

Both books are available worldwide on Amazon (paperback and Kindle) and for direct order within Thailand — delivered by registered postmail from a local publisher.

Fit for Purpose EA
Fit·for·Purpose Enterprise Architecture
฿699 · Thailand direct order
Practitioner Guide · EA Framework
Paperback on Amazon → Kindle Edition →
The Architect's Blueprint
The Architect's Blueprint
฿349 · Thailand direct order
Business Fiction · EA World Series · Book One
Paperback on Amazon → Kindle Edition →
Direct Order — Thailand
Fit·for·Purpose EA: ฿699  ·  The Architect's Blueprint: ฿349  ·  Price includes shipping · Thailand only · Delivered by registered postmail
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Fit·for·Purpose Enterprise Architecture
The Architect's Blueprint
Dr. Raschada Nootjarat
About the Author

Dr. Raschada Nootjarat

Founder · TOGAF® EA Practitioner · Author, Fit-for-Purpose EA

I developed the Fit-for-Purpose EA framework after 25+ years of field work, including a 13-year career at Accenture leading a landmark SAP implementation across 40 country entities, and ongoing work as Adjunct Lecturer at Chulalongkorn University.

Ph.D. — Chulalongkorn Business School TOGAF® EA Practitioner (2025) SAP Certified Enterprise Architect (2026) 25+ Years Field Experience Former Accenture Senior Lead
Full Profile at raschada.com →
Get in Touch

Questions about the books, the framework, or training and consulting services? Please reach out — or use the full enquiry form on the Services page.

Or email: contact@raschada.com
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