Line of Balance (LOB) is a project management tool that visually tracks progress and identifies potential delays by comparing cumulative planned vs. actual work. It involves essential concepts like cumulative plan and actual, lead time and buffer, critical and non-critical paths, and precedence relationships. Benefits of LOB include improved monitoring, proactive schedule adjustments, and enhanced decision-making. Creating a LOB chart involves defining tasks, estimating lead times, and establishing dependencies. Interpreting LOB data allows for analysis of progress, identification of bottlenecks, and the ability to adjust the schedule accordingly. LOB is crucial for effective project management as it provides a clear visualization of progress, enables timely intervention, and contributes to successful project completion.