Kyle Samani, co-founder of Multicoin, announced the launch of ACE (Application-Controlled Execution) at the Solana Breakpoint conference. This new feature allows developers to specify custom transaction ordering on Solana's blockchain, operating within a single global system with a unified liquidity pool. Part of Solana's 'Internet Capital Markets' roadmap, ACE provides smart contracts with millisecond-level control over transaction ordering, aiming to integrate traditional financial microstructure with blockchain scalability and reduce DeFi fragmentation.