Application Sizing is used to estimate the resource requirements (hardware) to support a proposed application Change or new
application, to ensure that it meets required service levels. Central part of this activity is the phase of product development.
In this part of application size it is very important to have a general look on hardware and other IT media, and to know the
expected costs. Very good examples of Application sizing are utilization data (how will the system react when X% more users
work at the same time) or capacity demand (break points, development etc.).