Deprecated. Includes methods for managing projects and entities in projects such as tasks, resources, and assignments. Project class methods also manage deliverables, project proposals, and project or master project relationships.
Assembly: ProjectServerServices (in ProjectServerServices.dll)
The Project class in the PSI is deprecated. For all new development, use the Project CSOM. Project Server 2013 apps that use the Project PSI will continue to work, but Project Online apps will need to replace any Project-class PSI methods with their equivalent CSOM methods.
The Project class manages all the projects on a given server, rather than providing an interface into only one project.