A distributed ledger is a type of database that is consensually shared and synchronized across multiple locations or nodes, enhancing the security and transparency of recorded data. Unlike traditional databases managed by a central authority, a distributed ledger allows all participants to access a shared record of transactions or data entries, often utilizing cryptographic techniques to ensure integrity. This architecture underpins technologies like blockchain, making it suitable for applications in finance, supply chain, and more. Distributed ledgers increase trust among participants by enabling tamper-proof record-keeping and real-time data access.