Information Technology Reference
In-Depth Information
Commitment to Technology,
Configuration, Performance, Cost, etc.
%
100
Cost Incurred
75
System-Specific Knowledge
50
25
Ease of Change
N
E
E
D
Conceptual-
Preliminary
Design
Detail Design
and
Development
Construction
and/or
Production
System Use, Phaseout,
and Disposal
FIGURE 15.1
Risk of delaying risk management for systems (Blanchard & Fabrycky,
1981).
1000
Larger software projects
500
IBM-SSD
200
GTE
100
80%
Median (TRW survey)
50
20%
SAFEGUARD
20
10
5
Smaller software projects
2
1
Design
Requirements
Code
Development
test
Acceptance
test
Operation
FIGURE 15.2
Risk of delaying risk management for software (Blanchard & Fabrycky,
1981).
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