In Hyperledger Fabric, an endorsement policy specifies which network participants, identified by
their digital identities, must endorse a transaction before it can be considered valid. This is crucial for
the network's security and integrity, as it controls how transactions are approved and added to the
ledger. Endorsement policies are part of the channel configuration and can be customized to fit the
specific needs of a business network. They dictate the necessary endorsements from specific
organizations or even particular roles within those organizations, ensuring that only authorized
entities can validate transactions. This mechanism supports the collaborative yet secure nature of
the enterprise blockchain, where trust is decentralized across different organizations that are part of
the network.