Yearn.finance (YFI) is a decentralised finance (DeFi) platform launched in 2020 by Andre Cronje. It revolutionizes yield optimization on the Ethereum blockchain by automating the process of finding and investing in the most profitable yield farming opportunities. With a minimal supply of only 36,666 YFI tokens, it captures value by functioning as a governance token that empowers holders to vote on significant protocol changes and proposals, aligning stakeholder interests. Yearn.finance aggregates various lending services, optimizing the earning potential for users while minimizing the need for active management. Its transparent, community-driven approach has positioned it as a critical player in the DeFi space, fostering innovation and decentralised financial structuring.