Abstract: A system and method for managing inventory for an electronic raffle is provided. The system may include an inventory database to store inventory data for one or more items to be sold via the electronic raffle, wherein the inventory data includes in-store inventory data and online inventory data, a mobile application configured to generate a raffle entry for the one or more items, a raffle database configured to store the inventory data and one or more raffle entries, and a middleware server configured to update the in-store inventory data stored in the raffle database based on the updated in-store inventory data obtained from the inventory database. The middleware server selects a first round winning raffle entry, transmits a notification to the mobile device associated with the first round winning raffle entry, and initiates a payment process upon determining that the first round winning raffle entry applies to the lightning round.