A groundcover does what turf does without the mowing, the water or the edges — it closes bare soil, keeps weeds from getting a start, and holds ground that would otherwise wash.
Its real value here is the awkward ground. Slopes too steep to mow safely. Dry shade under a mature tree where turf has never worked. Strips between a walk and a drive too narrow to water without soaking the concrete. Those are places where a lawn is a permanent argument and a groundcover is a one-time solve.
It is not a lawn substitute where people walk. Almost nothing low and spreading takes foot traffic the way turf does, and a groundcover used as a path wears through in one season. If somebody needs to cross it, it needs stepping stones in it from the start.
Two things worth knowing before choosing one. Spreading is the point, so the plant has to be contained where containment matters — against a lawn edge, a bed line, a neighbor. And weed suppression only works once it has closed. In the first two seasons, before the canopy knits, a groundcover bed needs weeding like any other, and the ones that fail are usually the ones abandoned in year one.