App-specific rollups are a type of blockchain architecture that aims to address scalability issues in current blockchain networks, particularly for layer-1 blockchains like Ethereum. In an app-specific rollup, each decentralized application (DApp) runs on its own separate blockchain, linked to the main chain. This allows for greater scalability and flexibility, as each app can be optimized for its specific use case. App-specific rollups can effectively manage Maximal Extractable Value (MEV) and can implement on-chain solutions to reduce malicious MEV and redirect healthy arbitrage profits from third parties to the appchain itself. They also allow for radical blockchain experiments to be carried out quickly, and can offer a path for the new communication standard of blockchains.