L2 Rollup Architecture

Definition ∞ L2 rollup architecture is a scaling solution for blockchain networks that processes transactions off the main chain, known as Layer 1. It bundles numerous off-chain transactions into a single batch and submits a cryptographic proof or summary to the Layer 1 blockchain. This approach significantly increases transaction throughput and reduces fees on the base layer. Rollups maintain the security guarantees of the underlying Layer 1.
Context ∞ L2 rollup architecture is a central topic in crypto news regarding blockchain scalability and network upgrades, especially for platforms like Ethereum. Reports often discuss the adoption of various rollup types, such as optimistic or zero-knowledge rollups, and their impact on transaction efficiency. This technology is viewed as critical for enabling wider adoption of decentralized applications by making them faster and more economical. It represents a key development in blockchain infrastructure.