This document discusses Seoul's Construction Cost Sharing (CCS) system, which discloses information on public construction projects through a website called Allimi. It notes that over 164,000 people accessed Allimi in 2015. The CCS system was recognized with a Human Technology Award for its transparency. Key factors in CCS's success included political will, civil society input, dedicated staff, and reforms to encourage transparency. Overall lessons included standardizing processes to reduce corruption risks, providing real-time information for accountability, and ongoing system upgrades and funding. The document recommends effective enforcement, sufficient resources, data standardization, offline community outreach, and anti-corruption policies to prevent issues.