Hyperledger Fabric is a blockchain framework designed for enterprise solutions, developed by the Hyperledger project under the Linux Foundation. Unlike public blockchains like Bitcoin or Ethereum, Hyperledger Fabric is a permissioned blockchain, meaning it is tailored for use in private networks where only authorized participants can join.

One of Fabric’s key features is its modular architecture, allowing developers to customize components like consensus algorithms, membership services, and smart contracts (called "chaincode" in Fabric). This flexibility makes it suitable for various industries, such as supply chain management, finance, and healthcare, where security, privacy, and performance are critical.

Fabric uses a unique approach to consensus. It allows participants to execute transactions independently of the final ordering process, which enhances scalability and efficiency compared to traditional blockchain architectures. Transactions are validated by a set of trusted nodes, and the ledger is updated only after the order and validity of transactions are confirmed.

Another important feature is the support for private channels, which enable subsets of network participants to conduct confidential transactions while still maintaining overall ledger integrity. This makes Hyperledger Fabric particularly appealing for businesses that need secure, permissioned access to shared data across multiple organizations while maintaining privacy.