The graphic presents the seven steps of software project sizing in function points.

The measure of the functional size in function points follows an ISO standard. It then enables to standardize the practices of measure and estimation of software projects. it also facilitates benchmarking activities.

A function point analysis is made of seven different steps. From the inventory of existing documentation to the calculation of the functional size, the definition of functional requirements, the measure of data functions and transactional functions, all those steps are detailed here.

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