Subscription - What is a subscription?
Definition: A purchase made by signed order, as for e.g. a periodical for a specified period of time.
A subscription is a contract in which a person pays for something in regular intervals, or in which a person pays a fee to receive a product, service, or otherwise in regular intervals.
In sales terms, a subscription could be made in order to receive a periodical, an upcoming book, a series of entertainments, or the like.