This project taught me how to build, deploy, and test a live NFT marketplace on Ethereum using Polygon for deployment. When a user puts an NFT for sale, it is transferred from the user to the marketplace smart contract until a buyer purchases it. The owner of the marketplace is also able to set a listing fee that will be transferred from the creator to the marketplace owner on the completion of sale allowing the owner to earn recurring revenue from transactions on the marketplace. All transactions are set to work on the Mumbai Testnet from Polygon.