This report, a student submission for the PPMP20012 unit, delves into the advantages and disadvantages of both manual and electronic project management (PM) application systems across the project lifecycle. It addresses how project managers handle projects, the tools available (including resource management and reporting systems), and the roles of project managers, clients, contractors, and employees in utilizing these systems. The report highlights the importance of PM applications in organizing information, setting deadlines, and facilitating team collaboration. It also discusses the integration of system thinking, system engineering, and system management principles in project execution. The analysis covers various PM knowledge areas such as procurements, risks, communications, human resources, quality, costs, time, scopes, and project integration, with the goal of identifying successful project management systems and ensuring effective data flow for informed decision-making. The report references several key publications and industry standards to support its findings.