Neo is an open-source blockchain platform designed to enable a Smart Economy by integrating digital assets, smart contracts, and digital identity. Founded in 2014 by Da Hongfei and Erik Zhang, Neo leverages the Delegated Byzantine Fault Tolerance (dBFT) consensus mechanism for fast, finalised transactions. It features a dual-token system: NEO for governance and GAS for transaction fees. Key tools include NeoFS for decentralised storage, NeoNS for domain naming, and the Neo Oracle Service to access off-chain data. Neo supports multiple programming languages, enabling seamless dApp development. Its migration from Neo Legacy to Neo N3 introduces improved performance, enhanced governance, and a robust developer-friendly environment. Neo also offers cross-chain interoperability through NeoX and quantum-resistant cryptography via NeoQS. With its advanced features and scalability, Neo aims to create a decentralised, secure foundation for the next-generation digital economy.