Zepto, Blinkit , Zomato has now started it. Instant grocery is a big market and has the potential to nearly threefold.
Zepto have opened dark stores (mini warehouse) in the cities in which they are active, and operate through them.
The consumers cannot enter the dark stores and their order is packed from there in less than 60 secs.
Compnies are actually competing with the offline merchants of India, which are almost 50 million.