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Solution-Related Architecture (Enterprise Architecture (Features (Context…
Solution-Related Architecture
Enterprise Architecture
Highest, most holistic level
Features
Context / Environment
Mission / reason
Product / Services
Organisation Structure
Processes
Information and Data
Strategy vs Tactics
Architecture Domains
Business
Data
Application
Infrastructure
Interdependant / Overlap
Determines
Organisation
Process
Content
Frameworks
The Open Group Architecture Framework (TOGAF)
Zachman
Federated Enterprise Architecture Framework (FEAF) - USA Gov
Ministry of Defense Architecture Framework (MODAF)
Governance
Principles - Look and feel - Guidelines
Policies
Legislation - Technical/Development standards
Change/Supplier management
Solution Architecture
Individual changes within Enterprise Architecture evolutionary change
Holistic Solution
Driving and controlling design
Defining solution scope
Focus
Breadth
Depth
Architecture Contract
Software Architecture
Purpose and Structure of software applications
Choice of development language and tools
Logical and physical design patterns
Structural constraints
Break down architecture building blocks into software components
Tiered software Architecture
Component based
N-Tier
Three Tier
Two-Tier / Client - Server
Thin / Thick
Hierarchical
Strategic / Tactical
Strategic
Manage strategic change
Prioritising and planning tactical changes "road map"
Various streams
Key Milestones - Step change
Key Business events - Planned / Unexpected
Tactical
Projects that deliver changes in "road map"
Dependencies and synchronisation issues
Day to day management
Architecture Governance
Key Function
check policies, standards and architectures are followed and complied with
validation and verification
Adherence to principles / constraints during development
Requires
something to govern
Roles and responsibilities / authority
Target system organisation / culture
Requirements - legislation, standards, principles, policies
Defined governance roles with authority
Governance process
Architecture contract
Defining review process and conducting reviews