Decentralization in blockchain refers to the idea that the control and decision-making power of a network is distributed among its users rather than controlled by a single entity, such as a government or corporation. This can be helpful in situations where people need to coordinate with strangers or where they want to ensure the security and integrity of their data.

In a decentralized blockchain network, there’s no central authority or intermediary that controls the flow of data or transactions. Instead, transactions are verified and recorded by a distributed network of computers that work together to maintain the integrity of the network.

When people talk about blockchain technology, they're often not just talking about the database. Blockchain technology powers applications such as cryptocurrencies and non-fungible tokens (NFTs), allowing people to collaborate and transact with each other without relying on a central authority.