What's a dark grocery store?
There's some interesting reporting on the various optimizations like all the isle being half width and one way to save floor space, or they don't put like items together so all the different ketchup brands (for example) are distrusted throughout the store so if it tells a picker to go to isle 5 shelf W and get heinz ketchup, there won't be any other similar items/brands near the heinz ketchup to confuse the picker with. They also arrange the stores in roughly descending weight so that heavy things go in first and light/fragile at the end.
A. Dark Stores / Fulfillment Centers Instant-Delivery Apps operate their own dark stores / fulfillment centers, typically one per neighborhood they operate in. Since these are not meant for consumers, space can be used more efficiently and typically the cost to operate these (at scale) as a percent of revenue is lower than rent space for grocery stores.
https://tanay.substack.com/p/understanding-the-instant-deliv...