Matakuliah
Tahun
: A0304 - Evaluasi Efektivitas Sistem Informasi
: 2006
Evaluation of IT Function
Pertemuan 13-18
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IT Effectiveness
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Meets its objectives
Operates within budgets
Delivers on time
Directs firm’s use of IT
Used competitively
Understood in the organization
Perceived to be an ally
Internally efficient as industry average
Delivers system for no greater cost
Perceived to be value for money
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CEA
Cost-Effectiveness Analysis (CEA) is a simplified
Benefit Cost Analysis, which can be done when either
the benefits or the costs are the same for all
alternatives.
The analysis is greatly simplified because the best
alternative is either:
the one with the most benefits (when the costs are
the same for all alternatives) or
the one with the lowest cost (when the benefits are
the same for all alternatives).
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UIS Model
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Evaluation of the IT Function - Goals
• There are two generic approaches to these view of
IT Functions,
– A Goal Centered view and,
– A Service Centered view.
• Goals are usually set at either strategic or tactical
level.
• They are implemented by the successful
completion of a series of tasks or projects.
• The Goal is usually associated with changing the
steady state of the business or IT Function.
• Change is the primary approach to this concept. 5
Evaluation of the IT Function Goals
• A Goals centered evaluation system is most
commonly associated with the Program or Project
Management perspectives.
– Define the requirements and understand what you will
need to do.
– Design a solution and plan its implementation to solve for
the requirements identified in the scoping activity.
– Execute the Plan.
– Measure the success against the original goals. Do
lessons learned, etc. Was the project successful?
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Evaluation of the IT Function Services
• A service centered view of the IT Function is
targeted toward maintaining or increasing the level
of service currently provided.
• Need a minimum level of service be maintained.
– Service levels are agreed to in advance by the IT
department and representatives of the user community.
– Metrics include tracking up-time and service availability.
• This is reduced to writing in the form of an Service
Level Agreement or SLA
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Evaluation of the IT Function Services
• An SLA is usually measured by quantifying the
time the system is available or service is
rendered and systems or service response
time.
• There are variations to this theme but a 99.5%
SLA on a system’s availability is common .
• This means that within the 99.5 SLA, an EBusiness solution can be “down” for about 3.6
hours a month [(30 day x 24 hours x 60
minutes) x .005]
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Evaluation of the IT Function Services
• Availability is the function of the users needs,
the system design and the negotiated
baselines.
• The minimum levels of service required are
documented.
• This approach to Services evaluation greatly
simplifies the quantification of the value of IT
Functions.
• Another approach to evaluating IT Functionality
is through the use of user satisfaction surveys. 9