While blockchain offers numerous innovations with its promises of decentralization and security, it also faces significant challenges such as scalability and efficiency. To address these challenges, Nuffle Labs has emerged with the Nuffle Fast Finality Layer (NFFL), a solution that provides finality within 3-4 seconds, quickly gaining attention in the blockchain space. In this article, we will delve into what NFFL is, its architecture, the technologies used, and the benefits it offers, with a focus on the technical details.