An inventory level represents the quantities of an inventory item for a location.

The Customer resource stores information about a shop's customers, such as their contact details, their order history, and whether they've agreed to receive email marketing.

A variant can be added to a Product resource to represent one version of a product with several options. The Product resource will have a variant for every possible combination of its options. Each product can have a maximum of three options and a maximum of 100 variants.

The Product resource lets you update and create products in a merchant's store. You can use product variants with the Product resource to create or update different versions of the same product. You can also add or update product images.