frontline feedback; voices from the ground
Refers to opinions, complaints, or suggestions from people directly involved in a situation, such as employees, customers, or residents, as opposed to managers or outsiders.
When developing a new service, it's important to listen to feedback from the front lines.
The company president regularly visits stores to gather voices from the ground.
Compound of 現場 (genba, 'actual place, site, front line') + の (no, possessive particle) + 声 (koe, 'voice'). The phrase is a straightforward combination of its parts.