This chapter describes the initial phase of the ADM. It includes information about defining the scope, identifying the stakeholders, creating the Architecture Vision, and obtaining approvals.

The objectives of Phase A are to:

1) Develop a high-level aspirational vision of the capabilities and business value to be delivered as a result of the proposed Enterprise Architecture.

2) Obtain approval for a Statement of Architecture Work that defines a program of works to develop and deploy the architecture outlined in the Architecture Vision.

This chapter describes the development of a Business Architecture to support an agreed Architecture Vision.

The objectives of Phase B are to:

1) Develop the Target Business Architecture that describes how the enterprise needs to operate to achieve the business goals, and respond to the strategic drivers set out in the Architecture Vision, in a way that addresses the Statement of Architecture Work and stakeholder concerns.

2) Identify candidate Architecture Roadmap components based upon gaps between the Baseline and Target Business Architectures.

This chapter describes the Information Systems Architectures for an architecture project, including the development of Data and Application Architectures.
The objectives of Phase C are to:

1) Develop the Target Information Systems Architectures, describing how the enterprise's Information Systems Architecture will enable the Business Architecture and the Architecture Vision, in a way that addresses the Statement of Architecture Work and stakeholder concerns.

2) Identify candidate Architecture Roadmap components based upon gaps between the Baseline and Target Information Systems (Data and Application) Architectures.

This chapter describes the development of a Technology Architecture for an architecture project..

The objectives of Phase D are to:

1) Develop the Target Technology Architecture that enables the Architecture Vision, target business, data, and application building blocks to be delivered through technology components and technology services, in a way that addresses the Statement of Architecture Work and stakeholder concerns.

2) Identify candidate Architecture Roadmap components based upon gaps between the Baseline and Target Technology Architectures.

This chapter describes the process of identifying delivery vehicles (projects, programs, or portfolios) that effectively deliver the Target Architecture identified in previous phases.

The objectives of Phase E are to:

1) Generate the initial complete version of the Architecture Roadmap, based upon the gap analysis and candidate Architecture Roadmap components from Phases B, C, and D.

2) Determine whether an incremental approach is required, and if so identify Transition Architectures that will deliver continuous business value.

3) Define the overall Solution Building Blocks (SBBs) to finalize the Target Architecture based on the ABBs.

This chapter addresses migration planning; that is, how to move from the Baseline to the Target Architectures by finalizing a detailed Implementation and Migration Plan.

The objectives of Phase F are to:

1) Finalize the Architecture Roadmap and the supporting Implementation and Migration Plan.

2) Ensure that the Implementation and Migration Plan is co-ordinated with the enterprise's approach to managing and implementing change in the enterprise's overall change portfolio.

3) Ensure that the business value and cost of work packages and Transition Architectures is understood by key stakeholders.

This chapter provides an architectural oversight of the implementation.

The objectives of Phase G are to:

1) Ensure conformance with the Target Architecture by implementation projects.

2) Perform appropriate Architecture Governance functions for the solution and any implementation-driven architecture Change Requests.

This chapter looks at establishing procedures for managing change to the new architecture.

The objectives of Phase H are to:

1) Ensure that the architecture development cycle is maintained.

2) Ensure that the Architecture Governance Framework is executed.

3) Ensure that the Enterprise Architecture Capability meets current requirements.

This chapter looks at the process of managing architecture requirements throughout the ADM.

The objectives of the Requirements Management phase are to:

1) Ensure that the Requirements Management process is sustained and operates for all relevant ADM phases.

2) Manage architecture requirements identified during any execution of the ADM cycle or a phase.

3) Ensure that relevant architecture requirements are available for use by each phase as the phase is executed.