L2 Execution

Definition ∞ L2 execution refers to the processing of transactions and smart contract operations on a Layer 2 scaling solution, rather than directly on the main blockchain, or Layer 1. These off-chain executions are then batched and verified on the Layer 1 chain, significantly increasing transaction throughput and reducing fees. It serves to augment the base layer’s capacity.
Context ∞ L2 execution is a critical area of development for improving the scalability of popular blockchains like Ethereum. News often reports on the performance, security, and adoption of various Layer 2 technologies such as rollups, sidechains, and state channels. The efficiency and reliability of L2 execution are key factors in determining the future growth and usability of decentralized applications.