Performance needs in Air Traffic Management refer to the performance required in a specific part of the network (Operating Environment) at a specific point in time.
SESAR Performance Plan (pan-European regional and national) for ATM-MP Ed. 3 (D02, Ed. 01.00.03, 2015)
Performance needs are driven by business requirements of stakeholders and are set in relation to traffic forecasts and trade-offs with other factors (e.g. cost). Performance needs are independent of solutions. Performance needs also have a relationship to the SES High Level Goals, but in their current form these goals do not drive performance needs.
Lexicon Release 2015.1