An External Owned Account (EOA) refers to an account in a blockchain that is controlled by a private key. The owner of this key has full control over the assets and can initiate transactions. EOAs are typically associated with individuals or entities, as they are created and managed by users directly. Each EOA has an address, which is used to send and receive funds or tokens. Unlike smart contracts, EOAs do not run code autonomously; they require manual interaction to perform actions like transferring cryptocurrency.The security of an EOA relies on how well the private key is protected. If someone gains access to the key, they can control the associated assets. Therefore, managing and safeguarding the private key is crucial for maintaining the integrity of the account.In summary, an EOA is a personal account on the blockchain that enables users to hold, send, and receive digital assets, governed by the possession of a private key.