To understand how to manage usage the marketer must understand consumption. The total quantity of offerings purchased over time by individual customers depends on several factors which include:

overall satisfaction with the offering $-$ reflecting the customer's experience of the offering.

the frequency with which consumers use the offering $-$ the number of occasions on which the offering is used.

the quantity used on each usage occasion

the frequency of replacement $-$ relevant in cases of unit$-$based products; like cars, printer cartridges,etc.

the availability of the offering $-$ whether the customers have a replacement at hand or can conveniently repurchase it$.$

all of the above