Architecture Development Method

Study notes on Enterprise Architecture...
(From The Open Group Architecture Framework (TOGAF))

TOGAF – a framework for long term strategic business planning that can be applied to the current state, future state and resulting gaps to map out what assets and capabilities an enterprise has and how they can be utilised to achieve optimised outcomes and differentiation.

The Architecture Development Method (ADM) is a set of phases that help to work through planning and architecture development at all levels of business; applying the method to the strategic or high level, abstract business plans will create a set of outputs that then create inputs for more detailed, segmented business planning. This creates unity in business planning; all departments or business segments are playing from the same song sheet.

The various phases of the Architecture Development Method include:

• PR – the preliminary phase, sets up framework and principles
• AV – Architecture vision and documentation phase; Statement of Architecture Work outlines the Scope, stakeholder expectations and validates the context with regards to business needs.
• BA – Business Architecture; current state, future state and gaps
• ISA – Information Systems Architecture; data and systems, current state, future state and gaps
• TA – Technology Architecture; infrastructure current state, future state and gaps
• O&S – Identify Opportunities and Solutions for implementing change
• MP – Migration and Planning; road mapping, cost analysis, risk assessment
• IG – Implementation Governance; projects should conform to the architecture plans
• ACM – Architecture Change Management; optimising phase, enabling changes in the business to be supported by the architecture
• AM – Architecture Management; requirements management, continuous throughout all the phases. Change should be validated by the requirements of the business.

ADM is a process for making iterations to business plans and architecture. During the entire process, as well as between phases and within phases, the scope, details and milestones are considered for

• Planning and Capabilities
• Development
• Transition
• Governance