Sui is a decentralized layer 1 blockchain that offers great transaction speed at a low cost. This permissionless blockchain is designed to support a wide range of applications. Being a layer 1 blockchain means Sui provides the underlying infrastructure for a system of validations and transactions, much like the Ethereum or Bitcoin networks. But what sets it apart from other L1s is its focus on instant transaction finality, reduced latency, and increased transaction speed. In short, Sui aims to increase its scalability without compromising on security by using a combination of the native programming language Move, parallel processing of transactions, and delegated proof-of-stake consensus mechanism.