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TOGAF 9 Guidelinesand Techniques Ver1 0

Nov 12, 2014

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Page 1: TOGAF 9   Guidelinesand Techniques Ver1 0

Summarised - 2010

Page 2: TOGAF 9   Guidelinesand Techniques Ver1 0

Applying Iteration to the ADM

Applying the ADM at different Enterprise Levels

ADM Cycle Approaches

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Architecture Context iterations allow initial mobilization of architecture activity

by establishing the architecture approach, principles, scope, and vision.

Architecture Definition iterations allow the creation of

architecture content by cycling through Business, Information

Systems, and Technology Architecture phases. These iterations

also allow viability and feasibility tests to be carried out by looking

at opportunities and migration planning.

Architecture Governance iterations support governance

of change activity progressing towards a defined Target

Architecture.

Transition Planning iterations support the creation of for

mal change roadmaps for a defined architecture

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Two process styles can be adopted within the ADM for the definition of architectures:◦ Baseline First: In this style, an assessment of the baseline (i.e., current

state) landscape is used to identify problem areas and improvement opportunities. This process is suitable when a target solution is not clearly understood and agreed upon.

◦ Target First: In this style, the target solution is elaborated in detail and then mapped back to the baseline, in order to identify change activity. This process is suitable when a target state is agreed at a high level and where the enterprise wishes to avoid proliferating current business practice into the target model.

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The enterprise must be

partitioned into different

areas, each of which can

be supported by

architectures (Subject

Matter, Time Period and

Level of Detail)

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Key Benefits

1. It is lightweight, as multiple architectures can

be developed against a single Request for

Work, project plan, etc.

2. It allows for very close integration of

architectures at different levels in the

organization.

3. It works well when all architectures are being

developed by a single team.

Key Limitations

1. It does not explicitly set out governance and

change management relationships between

the different architectures.

2. It requires all architectures to be completed in

sequence and potentially released at the

same time. This may delay the release of

strategic architectures or prevent specific

Capability Architectures from being

developed.

3. Similar architectural activities are repeated

within a number of phases within the ADM. It

may become difficult to distinguish the

differences between different phases.

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Key Benefits

1. It is comprehensive. All ADM activities are

carried out at all levels.

2. It establishes explicit governance

relationships between architectures.

3. It allows for federated development of

architectures at different levels in the

organization.

Key Limitations

1. It requires the establishment of an

enterprise-wide governance hierarchy to be

effective.

2. It does not work well when many

architectures are being developed by the

same team of architects.

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TOGAF Version 9, The Open Group Architecture Framework (TOGAF), 2009

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If you have one last breath use it to say...