Layer 2 vs Rollup

Layer 2 refers to secondary protocols and networks built on top of a blockchain's base layer (Layer 1) that process transactions off-chain while inheriting the security of the underlying blockchain, enabling higher throughput, lower fees, and faster confirmations without changing the base protocol.

A Layer 2 scaling solution that processes transactions off the main blockchain, bundles them into compressed batches, and posts cryptographic proofs back to the base chain for security and final settlement.