What Is Enterprise Architecture? A Deep Dive into Business Architecture Concepts
This article explains the core concepts of enterprise architecture, defines both enterprise and architecture, outlines major frameworks such as Zachman, TOGAF, DoDAF and FEA, distinguishes business and IT architecture, and details the components, models, and practical integration of business architecture with value streams, capabilities, information, organization, products, stakeholders, policies, and metrics.
Enterprise Architecture Overview
Enterprise is defined as any collection of organizations that share common goals. Architecture refers to the fundamental concepts or attributes of a system within its environment, expressed through elements, relationships, and design/evolution principles.
Enterprise Architecture Position
Enterprise architecture bridges corporate strategy and concrete projects. It consists of four major frameworks:
Zachman Framework (enterprise domain)
TOGAF Framework (enterprise domain)
DoDAF (military domain)
FEA (government domain)
Architecture Types
Enterprise architecture can be divided into two categories:
Business Architecture (BA)
IT Architecture, which includes Data Architecture (DA), Application Architecture (AA), and Technical Architecture (TA)
Business Architecture Fundamentals
Business architecture provides a multidimensional view of the business, covering capabilities, end‑to‑end value delivery, information, and organization, and their relationships to strategy, products, policies, plans, and stakeholders.
Key definitions:
Business : Activities undertaken to achieve corporate goals.
Architecture : System concepts, elements, relationships, and design/evolution principles.
Business architecture elements include:
Value (value proposition)
Capability (specific abilities and products)
Information (accurate, timely data)
Organization (people‑based social unit)
Product (goods, services, or combinations)
Stakeholder (internal or external parties interested in outcomes)
Policy (guiding principles set by senior management)
Metric (measurement standards for performance, progress, quality)
Two Main Business Architecture Models
Value‑Chain + Process Model (Porter’s value chain combined with Process Classification Framework)
Value‑Stream + Capability Model
Value‑Chain + Process
The value chain represents the combination of business activities within a specific industry, divided into primary and support activities. The Process Classification Framework (PCF) provides a hierarchical view of processes (L1‑L5).
Value‑Stream + Capability
A value stream is an end‑to‑end set of activities that create results for a customer. Capability is the specific ability or product needed to achieve a purpose.
Core Elements Interaction
Value streams map to processes, capabilities, information, and business objects, forming a cohesive structure that guides implementation.
Integration with Other Architectures
During project execution, business architecture must be coordinated with data, application, and technical architectures to ensure effective collaboration and delivery.
Collaboration with Domain‑Driven Design (DDD)
DDD provides bounded contexts for micro‑service boundaries, which serve as inputs for implementing business architecture.
Key Deliverables of Business Architecture
A corporate‑level business process framework
A corporate‑level capability framework
An integrated business capability and process framework
These deliverables help translate abstract concepts into practical, actionable artifacts.
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