The document analyzes examples of community engagement from 14 U.S. cities and identifies lessons learned and best practices. It finds that successful community engagement involves involving diverse groups of community members, using new tools like technology to draw in citizens, and focusing on sustainable efforts using multiple strategies. Key tactics for building community engagement include using open data, bringing different sectors together for problem solving, participatory budgeting, and developing civic skills in community members. The largest challenges are achieving broad participation, overcoming community divisions, and ensuring initiatives can continue with leadership and policy changes.