1. A method, implemented at least in part by a computing device, for determining an implementation size of a software package implementation project using a sizing framework, the method comprising: determining implementation sizes for one or more modules of the software package; determining one or more tasks to be implemented for the software package implementation project; determining a complexity factor for the software package implementation project; and calculating the implementation size of the software package implementation project based at least on the implementation sizes of the one or more modules, the one or more tasks to be implemented, and the complexity factor.