Feasibility means measure of how suitable system development will be to the company.there are four tests to evaluate feasibility which is operational feasibility,schedule feasibility,technical feasibility and economic feasibility which is also called cost or benefit feasibility.
the final activity in the implementation phase is to convert the old system to the new one.this change can take place using one or more conversion strategies.first is direct conversion.this conversion change the old system to the new system alternating.so this will be no confusion for the users to convert it.the other conversion is parallel conversion.this conversion is using both of old and new system in the same time.this make the users can make check and balance.for the phased conversion it is using one system in one time.for this the feasibility has not been tested.and the last conversion is called pilot conversion.in this conversion they use both of the system differently.for the users they cannot identified which is the best system.between all of the conversion strategies,whether it is good or not it is in the users' choice to choose the best one.
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