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Magento_GiftCard module introduces new product type in the Magento application called GiftCard Product. This module extends existing functionality of Magento_Catalog module by adding new product type.
This product option enables store owner to offers gift cards in Virtual, Physical, or Combination format. When a gift card is ordered, a unique code is generated that is emailed to a customer for virtual gift cards, or exported for printing to physical gift cards. This unique number can only be redeemed by one customer.