· Preliminary Phase
o Defining the Enterprise
o Identifying key drivers and elements in the organizational context
o Defining the requirements for architecture work
o Defining the architecture principles that will inform any architecture work
o Defining the framework to be used
o Defining the relationships between management frameworks
o Evaluating the enterprise architecture’s maturity
· Phase A – Architecture Vision
o It starts with a ‘Request for Architecture Work’ from sponsoring organization to architecture organization
o Key activities : Architecture Vision & Business Scenarios
o Development of Business Scenarios
o Define scope and Validate business principles, goals & drivers and establish EA KPIs
o Stakeholder Analysis should be used to identify key players.
o Identification of Business Transformation Risks
· Phase B – Business Architecture
o To develop business architecture to support agreed architecture vision
o Describe baseline business architecture, target business architecture, analyze gaps between them
o Select & develop relevant architecture viewpoints.
· Phase C – Information Systems Architecture
o Documenting fundamental organization of an Enterprise’s IT systems, embodied in major types of information & application systems
o Two key artifacts can be developed either sequentially or concurrently :
§ Data Architecture
§ Application Architecture
· Phase D – Technology Architecture
o Map application components to Software & Hardware
o Objective is to develop target technical architecture
o Define physical realization of the architectural solution
· Phase E – Opportunities & Solutions
o Review target business objectives & capabilities
o Consolidate gaps from phases B to D
o Objective is identification of target delivery vehicles
o It concentrates on how to deliver the architecture
o Derive a series of Transition Architectures that deliver continuous business value
o Generate & gain consensus on an outline Implementation and Migration strategy
o Actual solutions (COTS, Packages etc.) are selected
· Phase F – Migration Planning
o Cost benefit analysis of the projects identified in the Phase E & risk assessment
o Prioritization of the work packages, projects and building blocks
o Finalize the Architecture vision & Architecture Definition document in line with the agreed implementation approach
o Confirm the Transition architectures with stakeholders.
o Finalize a detailed implementation & migration plan
· Phase G – Implementation Governance
o Objectives are
§ To formulate recommendations for each implementation project
§ To Govern and manage an architecture contract
§ To ensure conformance of deployed solution with Target Architecture
o Defines an Operation Framework to ensure long life of deployed solution
o Outputs are : Architecture Contract, Compliance Assessments, Change Requests, Implementation Governance Model
· Phase H – Architecture Change Management
o To ensure baseline architectures continue to fit for purpose
o To maximize business value from architecture
o To ensure that architecture achieves its original target business value
o It is related to management of Architecture Contracts between architecture function and business users of the enterprise
o Rule of thumb to identify the extent of change
§ If change impacts more than 2 stakeholders, then it may require architecture re-design and re-entry to ADM
§ If only one stakeholder, then may be a candidate for change management
§ If change can be allowed under dispensation, then candidate for change management.
· Requirements Management
o Objective is to define process to manage requirements for EA and its subsequent implementation
Let us see more on TOGAF - ADM in coming days
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