Espresso Systems has successfully raised $28 million in a Series B funding round led by a16z crypto. The investment will fuel the company's hiring efforts and support its development of Espresso, a shared sequencing marketplace for rollups aimed at increasing rollup composability and value capture. The funding round saw participation from notable contributors and organizations involved in Layer 2 (L2) rollups and infrastructure projects, including Arbitrum, Polygon, Taiko, and Scroll ZKP. Espresso Systems, recognized as the lead developer of shared sequencing technology, has garnered support from various sectors within the blockchain community, including OffchainLabs for their work on Timeboost, a transaction ordering policy for rollups, highlighting its potential to enhance the Ethereum ecosystem and facilitate decentralized and interoperable solutions for L2s.