Research on Schedule Management of Information System Development Projects Based on Improved Critical Chain Management Method

Previous studies on project schedule management were mainly concentrated on construction or manufacturing projects. Information system development projects, given their differences and uniqueness, do not show significant outcomes when conventional project management techniques are directly applied. Therefore, this study aims to improve and optimize the Critical Chain Project Management (CCPM), providing reference cases and methodological insights for schedule management of information system development projects. The study proposes using Company Y as the subject, applying a workload estimation model based on functional size for regression analysis of Company Y’s information system development projects, and then, using a dynamic weight model to investigate the optimal allocation scheme for constrained resources. By studying the performance of the CCPM before and after improvement in dealing with resource conflict issues, it is first concluded that the improved critical chain management method can quickly complete resource allocation; secondly, it results in the shortest planned project duration; thirdly, the improved method can dynamically adjust the resource allocation plan according to the project execution situation. The results indicate that the CCPM is insufficient for the needs of information system development projects, while the improved CCPM method is more in line with the characteristics of such projects.