Parent product (variant grouping)

A parent product here is a grouping record connecting related variants, such as one model in different sizes and colours. The group holds shared information while the variant identifies the concrete version offered. Google's item group ID and title illustrate this grouping approach.[1]

Do not automatically assign physical stock to the group if individual sizes have different availability. A parent is not a hero product, which concerns commercial prominence rather than catalogue structure. Check how the relevant channel represents grouping records and purchasable variants.