Chainlink, launched on May 30, 2019, has evolved into a vital oracle infrastructure for Web3, expanding from a single ETH/USD Price Feed to supporting nearly a thousand decentralized oracle networks across over 12 blockchains and layer-2 solutions. It has addressed the blockchain oracle problem by securely connecting on-chain environments with off-chain data, thus facilitating the growth of major Web3 verticals like DeFi, NFTs, and parametric insurance. Chainlink's role has expanded from data delivery to secure off-chain computation, offering services like verifiable randomness and transaction automation. Its multichain support includes integration with networks such as Ethereum, Polygon, and Avalanche, and it has introduced diverse on-chain datasets like weather readings and sports stats. The ecosystem boasts over 1,320 projects, including collaborations with major enterprises such as Google Cloud and Amazon Web Services. Chainlink's contributions to smart contract research and development, like the Off-Chain Reporting protocol and Chainlink 2.0, highlight its impact on advancing blockchain technology. The platform's success is attributed to a committed community of developers, node operators, and advocates who drive its adoption and innovation.