Depending on the scale and complexity, if you make no effort to control resource usage, costs grow exponentially, sometimes even without growth in business beca

Depending on the scale and complexity, if you make no effort to control resource usage, costs grow exponentially, sometimes even without growth in business because the requirements just become more complex. For a certain optimization, you may save 1TB today, but end up saving 2TB some years down the road; just a few of these decisons you could be looking at a difference of a magnitude or more, sometimes even at larger scale. Overall there's always a balance to be struck.