Learning from driver - Is this a thing?

Hi, just bought a 2015 Outback and have a mechanic telling me that there is
an internal engine computer he would be able to reset using a "Subaru
computer" that essentially helps the car learn from the driver. They'd like to
charge $100 to reset it. They say that with a new driver this can improve
performance.

Is this a real thing? I'm finding very little about it if anything online, is there
anything that would match this description?