What does transaction execution separation achieve in Hyperledger Fabric?

Transaction execution separation in Hyperledger Fabric achieves concurrency and parallelism in the network by allowing transactions to be processed independently from one another. This design means that multiple transactions can be evaluated simultaneously, which greatly improves the throughput and efficiency of the network. By separating the endorsement of transactions from their commitment, Hyperledger Fabric can handle many transactions in parallel without them interfering with each other.

This model helps to utilize the available resources more effectively and reduces the waiting times that occur when transactions need to be executed serially. As a result, organizations using Hyperledger Fabric can scale their applications to meet higher demands while still maintaining performance.