Jito Labs has introduced the Block Assembly Marketplace (BAM) to address key challenges within the Solana network and strengthen its on-chain capabilities. BAM aims to ensure transparency and fairness in Solana's execution layer, potentially surpassing centralized trading venues. The initiative addresses execution uncertainty caused by Solana's seven different transaction schedulers and draws lessons from Ethereum's proposer-builder separation to avoid similar incentive issues. BAM employs a plugin system for Application Controlled Execution (ACE) to overcome FIFO ordering limitations. It leverages Trusted Execution Environments (TEE) for secure and verifiable transaction settlements, emphasizing physical security and confidentiality. Future plans for BAM include open-sourcing its code, expanding ACE, decentralizing operators, enabling collaborative block building, and utilizing FPGA hardware acceleration.