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Summary Design Methods 1
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Summary of the course Design Methods 1. Includes subjects like Enterprise Architecture, ArchiMate, risk analysis & requirements
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By: botten • 6 year ago
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IntroductionGoal: To create an adequate, appropriate IT infrastructure design in a structured way.
Project Initiation Retirement
Production/
Problem Analysis
Exploitation
Requirements & Test Acceptance
analysis test
Functional Functional
Design test
Technical Design Unit test
Realization
Time
Correct order
Figure 1:IT Infrastructure life-cycle model:overview
1. Project Initiation
2. Problem Analysis
3. Requirements and Test Analysis
4. Functional Design
5. Technical Design
6. Realization
7. Unit Test
8. Functional Test
9. Acceptance Test
10. Production/Exploitation
11. Retirement
Every phase of this method is intended to obtain more knowledge in a structured way: don’t start
with realization, you need to think first.
Alternatives for the V-model: Waterfall, Agile, Scrum
IT architecture
Infrastructure design is about Functionality, Quality, knowledge and insight.
The success of a project / design is determined by:
• Strategic alignment with the business
• Stakeholder analysis
, Designing is the process of taking decisions / making choices, from global scope to detail scope, to
define the elements of a system to be build.
OIAm definition of IT Architecture IT Architecture guides design:
frames design space
IT Architecture is a consistent set of principles and Decisions are distinguished by:
models that gives direction to design and realization
• Have IT environment-wide
of the processes, organizational structure, impact
information and technical infrastructure of an • Influence quality attributes
organization. that are important for the entire IT
+
OIAm definition of IT Infrastructure
environment
The set of generic facilities that provide the technical
support function to the whole of IT applications of an
organization (also generic applications like email and
calendaring, call management, file & print ...)
=
Infrastructure Architecture definition
=
Infrastructure architecture is the complete, consistent and coherent set of methods,
rules, models and tools which guides the (re)design, migration and implementation of
the technical infrastructure of an organization according to a vision.
Notice the word “guides” in the definition above: it expresses how architecture itself does not create
technical designs, it rather aims to frame the infrastructure design space. It is the task of the
infrastructure architects to coordinate all infrastructure creation and adaptation processes in the
organization, while the designers do the actual designing within the scope of their own project.
A successful organization must have:
• Adequate business processes with stakeholders
• Efficient Information management
• Customized applications
• Proper infrastructure foundations
IT Architecture, what is it? (tangible)
A set of documents about the IT landscape containing:
• Principles
• Rules
• Models
• Overviews
• Viewpoints
• Tools………………Written in a standardized language
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