Microsoft Project is the industry-standard project management software developed by Microsoft for planning, scheduling, resource allocation, and tracking projects of any size. Used across construction, IT, manufacturing, and professional services, it provides powerful tools for critical path analysis, earned value management, and multi-project coordination through desktop, web, and cloud-based versions (Project Desktop, Project for the web, Project Online). The software operates on a core scheduling formula: Work = Duration × Units, where understanding how task types and constraints interact determines whether your schedule reflects reality or wishful thinking. Master the distinction between auto-scheduled and manually-scheduled tasks, and you'll avoid the most common pitfall: fighting the tool instead of leveraging its calculation engine.