L2beat is a website that provides information about Ethereum layer 2 scaling, which is a collective term for Ethereum scaling solutions ¹. Here are some key points about Ethereum layer 2 scaling ¹ ²:

- Layer 2 is a separate blockchain that extends Ethereum and inherits the security guarantees of Ethereum.

- Ethereum also functions as a data availability layer for layer 2s.

- Layer 2 projects will post their transaction data onto Ethereum, relying on Ethereum for data availability.

- The main goal of layer 2 is to increase transaction throughput without sacrificing decentralization or security.

- Layer 2s take the transactional burden away from layer 1, allowing it to become less congested and everything becomes more scalable.

- Rollups bundle hundreds of transactions into a single transaction on layer 1.

- There are two different approaches to rollups: optimistic and zero-knowledge.

- L2beat provides a comprehensive risk assessment framework of each project.