Context
An Offer is the template for a Subscription.
When a Customer subscribes to an Offer, they inherit a Subscription.
The Subscription is directly linked to a Customer and an Offer.
You can modify the Offer, but it will not modify the Customer’s Subscription.
You can modify a Customer’s Subscription, but it will not affect the Offer linked to that Subscription.
The Subscription is a copy of the Offer made during the Customer’s subscription.
