> For the complete documentation index, see [llms.txt](https://docs.deriw.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.deriw.com/deriw-chain/rollup-architecture-+-zero-gas-fees.md).

# Rollup Architecture + Zero Gas Fees

<figure><img src="/files/X1dOOZ9auqQJJdwDqU6y" alt=""><figcaption></figcaption></figure>

## Layer 3 Technology

Layer 1 is based on Ethereum. Ethereum builds a solid foundation, ensuring unparalleled security and decentralization.

Arbitrum acts as Layer 2, optimizing scalability, reduces costs and increases speed by processing transactions off-chain.

Built on Rollup architecture, DeriW inherits Ethereum's security while seamlessly integrating Layer 3 applications with Layer 2 infrastructure to ensure complete transparency of on-chain data.