Event Date:March 17, 2010
Consistent estimation and planning in large projects normally involves applying various different models to the approach or methodology. With specific models applied to discrete types or work, the effort in estimation and planning comes in ensuring the modeling and the independent variables are correct.
Each individual scope item or deliverable can then have the models applied. The advantage of this is stakeholders have ownership of the eventual plan, and when an estimation error is found it can be applied readily across the entire project. The significant advantage of this being when customers want scope or date changes, their need can usually be quickly met. A further advantage is that lessons learnt can be applied to each iteration of the plan.