How Can Portfolio Management Help With Decisions Regarding Migration Versus Greenfield

Greenfield and migration strategies have specific advantages and disadvantages. To be able to make a decision you have ask yourself questions like:

  • What are we going to do with our current legacy infrastructure?
  • What are we going to do with are current legacy technology?
  • And what are going to do with our current employees?

When To Migrate from Old to New?

These are examples of simple questions and not so simple answers. Yet we all know that we need an answer before we can decide on how to proceed. This implies that we need a process that can supply us we the answer after executing some steps. We recommend to this by crafting a business case, and evaluate this before proceeding any further.

Portfolio Management can help you with estimating the Return On Investment (ROI) of your IT portfolio. This helps you identify specific areas which need attention. Guidance regarding decisions can come from answers on what if questions like:

  • Can we reuse the existing specifications, or should we start from the very beginning?
  • Can we migrate the content of the dictionary of our old tool to the new tool and environment?
  • Can we reuse our existing methods, or must we adapt new ways of working?

Generally speaking: it is possible to migrate from old to new. The question is rather is it worth the trouble? And more precise: can we create a business case for the migration?

Input for the Migration Business Case

The important question to answer before we can establish a successful and positive business case is: What does it take us to make all required knowledge explicit?

The Business Case For Portfolio Management

The best way is to perform a limited specifications pathfinder to gather the metrics for your business case. Usually it is better to stay on the safe side. Such a business case is not really different from a 'greenfield' business case, and guarantees that:

  • All business knowledge is made explicit, and therefore independent of persons.
  • All business knowledge is extracted from all tools, so the licenses can be stopped (and cuts costs).
  • Existing approaches are reformed to the new way of working by a training on the job on trusted and known specifications.

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