Selecting the most appropriate process model

 

Selecting the most appropriate process model:

Construction of an application can be distinguished from its installation. It is possible to use different approaches for these two stages. For example- an application could be constructed using a waterfall or one shot strategy but then be released to its users in increments. The only combinations of construction and installation strategies that are not feasible are the evolutionary installation with any other construction approach than evolutionary.

            Where uncertainty is high then an evolutionary approach is to be favored. An example of uncertainty would be where the user’s requirements are not clearly defined. Where the requirements are relatively certain but there are many complexities, as with a large embedded system needing a large amount of code, then an incremental approach is favored over a one shot strategy, as both tactics should allow at least something to be delivered at the deadline, even if it is not all that was originally promised.

 

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