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Lecture July 18, 2011

Architectural Bussiness

CycleBy

Mangesh R. WanjariAsst. Professor, Department of CSE

RKNEC, Nagpur

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Overview of the talk

Introduction

What is ABC

What is Software Architecture Is it the same as design

Case study

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Introduction

Simply stated, competitive success flows to the

company that manages to establish proprietary

architectural control over a broad, fast-moving,

competitive space.

C. Morris and C. Ferguson [Morris 93]

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Architecture Business Cycle (ABC).

How organizational goals influence requirements

and development strategy.

How requirements lead to an architecture.

How architectures are analyzed. How architectures yield systems that suggest new

organizational capabilities and requirements.

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Architecture Business Cycle (ABC).

ARCHITECTURES ARE INFLUENCED BY SYSTEM

STAKEHOLDERS

Many people and organizations are interested in the

construction of a software system. We call thesestakeholders: The customer, the end users, the

developers, the project manager, the maintainers,

and even those who market the system are a few

examples.

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Architecture Business Cycle (ABC).

ARCHITECTURES ARE INFLUENCED BY THE DEVELOPING

ORGANIZATION

There are three classes of influence that come from the developing

organization: immediate business, long-term business, and

organizational structure.

1. An organization may have an immediate business investment in

certain assets, such as existing architectures and the products

based on them.

2. An organization may wish to make a long-term businessinvestment in an infrastructure

3. The organizational structure can shape the software architecture.

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Architecture Business Cycle (ABC).

ARCHITECTURES ARE INFLUENCED BY THE BACKGROUND

AND EXPERIENCE OF THE ARCHITECTS

If the architects for a system have had good results using aparticular architectural approach, such as distributed objects

or implicit invocation, chances are that they will try that same

approach on a new development effort. Conversely, if their

prior experience with this approach was disastrous, thearchitects may be reluctant to try it again.

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Architecture Business Cycle (ABC).

ARCHITECTURES ARE INFLUENCED BY THE TECHNICAL

ENVIRONMENT

A special case of the architect's background and experience is

reflected by the technical environment. The environment that

is current when an architecture is designed will influence that

architecture.

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Architecture Business Cycle (ABC).

RAMIFICATIONS OF INFLUENCES ON AN ARCHITECTURE

Influences on an architecture come from a wide variety of

sources. Some are only implied, while others are explicitly in

conflict.

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Architecture Business Cycle (ABC).

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Software Processes and the Architecture Business Cycle

Creating the business case for the system

Understanding the requirements

Creating or selecting the architecture

Documenting and communicating the architecture

Analyzing or evaluating the architecture

Implementing the system based on the architecture

Ensuring that the implementation conforms to the

architecture