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Transition to New System;

Post-implementation

CORRESPONDING TO CH 13 OF “SYSTEMS ANALYSIS AND DESIGN,” BY DENNIS, WIXOM, AND ROTH

Learning Objectives

 Describe the main steps of transitioning to a new system

and the elements of a migration plan.

 Explain different types of conversion strategies and when to

use them.

 Understand the importance of a business contingency plan.

 Describe several techniques for change management

(convincing the people to accept the new system).

 Describe important post-installation processes.

Key Ideas

Transitioning to new systems involves managing change from pre-existing norms and habits. Three “steps”: Image source: http://lundbergmedia.com/2010/07/23/how-to-survive-in-a-world-of-constant-change/^4

Elements of a Migration Plan

Conversion Strategies

Conversion Styles

 (^) Direct conversion o (^) The new system instantly replaces the old  (^) Parallel conversion o (^) For a time both old and new systems are used. The old is abandoned when the new is proven fully capable.

Conversion Location

 (^) Pilot conversion o (^) One or more locations are converted to work out bugs before extending to other locations  (^) Phased conversion o (^) Locations are converted in sets

Conversion Location

 (^) Pilot conversion o (^) One or more locations are converted to work out bugs before extending to other locations  (^) Phased conversion o (^) Locations are converted in sets  (^) Simultaneous conversion o (^) All locations are converted at the same time

Key Factors in Selecting a Conversion

Strategy

Risk ◦ (^) Seriousness of consequences of remaining bugs Cost ◦ (^) Parallel requires paying for two systems for a period of time ◦ (^) Simultaneous requires more staff to support all locations Time ◦ (^) Parallel, phased, and modular require more time

Determining a Conversion Strategy:

Risk

To minimize risk… ◦ (^) Parallel conversion style ◦ (^) Pilot conversion location ◦ (^) Conversion by modules Riskiest conversion strategy: ◦ (^) Direct conversion style ◦ (^) Simultaneous conversion location ◦ (^) Conversion of whole system

Determining a Conversion Strategy:

Time

To minimize time… ◦ (^) Direct conversion style ◦ (^) Simultaneous conversion location ◦ (^) Conversion of whole system Longest time conversion strategy: ◦ (^) Parallel conversion style ◦ (^) Phased conversion location ◦ (^) Conversion of modules

Summary of Conversion Strategies

Change Management PREPARING THE PEOPLE FOR THE NEW SYSTEM

Understanding Resistance to Change

Even changes that benefit an organization do not necessarily benefit each individual Adapting to new work processes requires effort, for which there may be no additional compensation