In some cases it can be difficult to tell exactly where to start with parallel decomposition. Project boundaries are rarely as tidy as analysts might wish. That is why, in Principles of Parallel Decomposition, the subject of parallel decomposition was described as a "problem space."
If you begin in the classically recommended manner, the results will be an Information Strategy Plan in which business areas are clearly defined. In such a case, each analysis project focuses on a single business area.
The reality is that most analysis projects do not begin with a pre-scoped, logically consistent business area definition. Since such projects can be any shape or size, a term like "problem space," which is sufficiently general to apply to any analysis effort, is necessary to define their scope.
There is often no question of where to begin the analysis. If the goal of the analysis project is to solve some immediate business need, the scope of the project is probably already well known. If the scope of analysis is some business area identified during planning, the analysis project scope should also be well understood.
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