Third-Party Resources
TOGAF Resources The Open Group Architecture Framework for enterprise architecture
TOGAF (The Open Group Architecture Framework) provides a comprehensive approach to designing, planning, implementing, and governing enterprise information architecture. It complements NUP by providing enterprise-level architecture guidance.
TOGAF is a framework for enterprise architecture that provides methods and tools for assisting in the acceptance, production, use, and maintenance of an enterprise architecture.
┌─────────────────────────────────────────────────────────────────────────────┐ │ TOGAF ADM CYCLE │ └─────────────────────────────────────────────────────────────────────────────┘ ┌───────────────┐ │ Preliminary │ │ Phase │ └───────┬───────┘ │ ▼ ┌────────────────────────┐ ┌───────│ A. Architecture │───────┐ │ │ Vision │ │ │ └────────────────────────┘ │ │ │ ▼ ▼ ┌─────────────┐ ┌─────────────┐ │B. Business │ │H. Arch │ │ Architecture│ ┌────────────────┐ │ Change Mgmt │ └──────┬──────┘ │ Requirements │ └──────┬──────┘ │ │ Management │ │ ▼ └────────────────┘ ▲ ┌─────────────┐ ┌─────────────┐ │C. Info Sys │ │G. Implement │ │ Architecture│ │ Governance │ └──────┬──────┘ └──────┬──────┘ │ │ ▼ │ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │D. Technology│───▶│E. Opportunit│───▶│F. Migration │ │ Architecture│ │ & Solutions │ │ Planning │ └─────────────┘ └─────────────┘ └─────────────┘ Phase Purpose Key Deliverables Preliminary Prepare organization Architecture principles, governance A. Vision Set scope and vision Architecture Vision document B. Business Develop business architecture Business Architecture C. Information Systems Develop data and application architectures Data/Application Architecture D. Technology Develop technology architecture Technology Architecture E. Opportunities Identify implementation approach Project list, roadmap F. Migration Planning Create detailed implementation plan Migration plan G. Implementation Provide architecture oversight Compliance assessments H. Change Management Manage architecture changes Change requests
TOGAF defines four architecture domains:
Component Description Organization Structure How the business is organized Business Processes Core business workflows Business Capabilities What the business can do Business Services Services provided to customers
Component Description Data Entities Key business data objects Data Relationships How data relates Data Governance Data management policies Data Lifecycle Data creation to retirement
Component Description Application Portfolio All applications Application Interfaces How apps communicate Application Services Capabilities provided Application Integration Integration patterns
Component Description Infrastructure Hardware, networks Platforms Operating systems, middleware Technology Standards Approved technologies Technology Roadmap Platform evolution
┌─────────────────────────────────────────────────────────────────────────────┐ │ BUILDING BLOCKS │ ├─────────────────────────────────────────────────────────────────────────────┤ │ │ │ Architecture Building Blocks (ABBs) │ │ ┌─────────────────────────────────────────────────────────────────────┐ │ │ │ Define WHAT functionality is required │ │ │ │ Technology-independent │ │ │ │ Examples: Payment Service, Customer Repository │ │ │ └─────────────────────────────────────────────────────────────────────┘ │ │ │ │ │ ▼ │ │ Solution Building Blocks (SBBs) │ │ ┌─────────────────────────────────────────────────────────────────────┐ │ │ │ Define HOW functionality is implemented │ │ │ │ Technology-specific │ │ │ │ Examples: Stripe API, PostgreSQL Database │ │ │ └─────────────────────────────────────────────────────────────────────┘ │ │ │ └─────────────────────────────────────────────────────────────────────────────┘ Category Artifacts Catalogs Lists of building blocks (Application Catalog, Technology Catalog) Matrices Relationships between entities (Application/Data Matrix) Diagrams Visual representations (System Context, Data Flow)
The Enterprise Continuum classifies architectures from generic to specific:
Generic ────────────────────────────────────────────────▶ Specific ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │ Foundation │ │ Common │ │ Industry │ │Organization │ │ Architecture│ │ Systems │ │ Architecture│ │ Specific │ │ │ │ Architecture│ │ │ │ │ │ TRM, IIIRM │ │ SOA, Cloud │ │ Healthcare │ │ Your │ │ │ │ │ │ Finance │ │ Enterprise │ └─────────────┘ └─────────────┘ └─────────────┘ └─────────────┘ Component Purpose Architecture Board Oversee architecture decisions Architecture Contracts Agreements between parties Architecture Compliance Ensure solutions align Architecture Principles Guide decision-making
# Architecture Principle: [ Name ] ## Statement [Clear statement of the principle] ## Rationale [Why this principle is important] ## Implications [What this means in practice] - Implication 1 - Implication 2 ## Example Principles - Reuse over build - Buy over build - Technology independence - Data is an asset - Security by design TOGAF ADM Phase NUP Phase Integration Preliminary, A Inception Establish vision and principles B, C, D Elaboration Define architecture E, F Elaboration/Construction Plan implementation G Construction/Transition Govern implementation H Operations Manage changes
NUP Deliverable TOGAF Artifact Architecture Document Architecture Definition Document System Context Context Diagram Component Design Application Architecture Data Model Data Architecture Infrastructure Design Technology Architecture
ArchiMate is an open standard for enterprise architecture modeling that works with TOGAF.
Layer Elements Purpose Business Actors, Roles, Processes Business operations Application Components, Services, Data Applications Technology Nodes, Devices, Networks Infrastructure
Element Purpose Stakeholder Individual or organization Driver External or internal condition Goal End state to be achieved Requirement Statement of need Constraint Limitation
This section fulfills ISO 13485 requirements for design planning (7.3.2), design interfaces (7.3.1), and documentation requirements (4.2.3), and ISO 27001 requirements for secure architecture (A.8.27), information security in project management (A.5.8), and documented operating procedures (A.5.37).
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