TOGAF® Standard, 10th Edition · OGEA-101 Foundation · Quick revision
Enterprise Continuum
Official definition — learn word for word
“A categorization mechanism for classifying architecture and Solution Building Blocks (SBBs) as they evolve from generic to specific applicability (or vice versa).”
It comprises two complementary concepts: the Architecture Continuum and the Solutions Continuum (CC §3.10).
Source: CC §4.44 · CC §3.10
Memory aid
Architecture Continuum levels, generic → specific: F-C-I-O.
F Foundation
C Common Systems
I Industry
O Organization-Specific
Memory aid — not TOGAF wording.
In plain words
A way of labelling every asset by how generic or how specific it is, so you can find and reuse the right one.
Plain-English summary — not TOGAF wording.
Worked example
The TOGAF TRM is Foundation; a generic single-sign-on pattern is Common Systems; a higher-education student-lifecycle model is Industry; DUK's own student-services architecture is Organization-Specific.
Illustrative example (Digital University Kerala) — not from the Standard.
01Mind map — related concepts
Enterprise Continuum
THREE CONTINUA
Enterprise (outer) · Architecture · Solutions
ARCHITECTURE CONT.
Structures ABBs; guides Solutions Continuum
SOLUTIONS CONT.
Re-usable SBBs that implement the architecture
ARROWS
Adaptation for use → ← Generalization for re-use
CLASSIFIES ASSETS IN
Enterprise Repositories (incl. Arch. Repository)
NOT TO CONFUSE WITH
Architecture Repository (storage)
Source: CC §3.10 (Fig 3-4) · AC §6.3, §6.4.1
02Enterprise vs Architecture vs Solutions Continuum (AC §6.3)
| Continuum | What it classifies / offers |
|---|---|
| Enterprise Continuum | The outermost continuum: classifies assets related to the context of the overall EA (policies, standards, strategic initiatives, organizational structures, enterprise-level capabilities). Not directly used during ADM architecture development. |
| Architecture Continuum | A consistent way to define and understand generic rules, representations and relationships; a structuring of ABBs, from Foundation → Common Systems → Industry → Organization-Specific |
| Solutions Continuum | A consistent way to describe and understand the implementation of the assets in the Architecture Continuum; defines re-usable SBBs |
Source: AC §6.3, §6.4.1 · CC §4.10, §4.74
03How the ADM uses the Continuum (AC §6.5)
Adopt & adapt generic assetsleft → right: generic to organization-specific
develop and deploy
Enterprise-specific architecture + solutionsconform to that architecture
if credible and effective
Generalize for re-useright → left in the classification
Source: AC §6.5 · CC §3.10
04Where it appears in the ADM
Throughout the ADM
At relevant places there are pointers to useful architecture assets at the relevant level of generality in the continuum.
AC §6.5
Phase G · Step 11.3.3
Update Enterprise Continuum directory and repository for solutions.
ADM §11.3.3
05Exam traps
“The Enterprise Continuum stores architecture assets” → It is a categorization mechanism; the Architecture Repository stores
“It has only two parts” → Three continua: the outermost Enterprise Continuum plus the Architecture and Solutions Continua
“Adaptation for use runs specific → generic” → Adaptation for use: generic → specific; generalization for re-use: specific → generic
“The Architecture Continuum structures SBBs” → It structures ABBs; the Solutions Continuum covers SBBs
“The TOGAF TRM sits at the Organization-Specific end” → Foundation Architectures, such as the TRM, sit at the generic end
06Self-test — tap to reveal
Q1Define the Enterprise Continuum.
A categorization mechanism for classifying architecture and SBBs as they evolve from generic to specific applicability (or vice versa).
Q2Name its two complementary concepts.
Architecture Continuum and Solutions Continuum.
Q3Name the four levels, generic → specific.
Foundation, Common Systems, Industry, Organization-Specific.
Q4What does the arrow “Adaptation for use” point towards?
Specific.
Q5Which continuum structures ABBs?
Architecture Continuum.
Q6Which is the outermost continuum?
The Enterprise Continuum.
Q7Is the Enterprise Continuum used directly during ADM architecture development?
Its classes of assets may influence architectures but are not directly used.
Q8Give an example of a Foundation Architecture.
The TOGAF Technical Reference Model (TRM).