Espresso is a decentralized infrastructure that enhances blockchain scalability and privacy by providing a shared sequencing layer for rollups. It uses the HotShot consensus protocol for fast, fair transaction ordering and finality, reducing latency and centralization risks. Rollups connect via Espresso’s sequencing APIs, retaining control over execution while outsourcing ordering. Its modular architecture supports integration with Layer 1 chains and other rollups, improving interoperability, efficiency, and composability across networks.