Abstract: An improved method is provided for managing a project. The method includes defining a project model that represents the project, where the project is comprised of a plurality of sub-projects, and each of the sub-projects is comprised of a plurality of tasks. Each task is assigned a responsible entity. The improved method further includes identifying interdependency data between the tasks, populating the project model with the interdependency data, and managing the project using the project model. The interdependency data is further defined as being an input requirement to complete a given task in a given sub-project, such that the input requirement is derived from another sub-project having a different responsible entity.