it kind of depends. in general, its best from a planning or PM perspective (and probably important to people funding you) to know the big four: timeline, size

it kind of depends. in general, its best from a planning or PM perspective (and probably important to people funding you) to know the big four: timeline, size, cost, quality. exactly what you use to measure each one is flexible. they might not be important for a startup to track thoroughly, but its good to know the general neighborhood you're in on each point. funding won't last forever.