Just how much can people factors influence your project cost and effort? 24.6 percent! In other words, the least experienced team (the bottom 15...
On the Microsoft patterns & practices team, we use Vision / Scope as a key milestone. It’s where we frame the problem, identify the business opportunity, and paint a vision of the solution. It’s a forcing function to get clarity on the customer, their scenarios, and our scope for the project. We generally use a “fix time, flex scope” pattern, so this means having a candidate backlog that we prioritize with customers.
One of the most effective approaches I've found for chunking up a project for incremental value is using a Scenario and Feature Matrix. Scenarios are Your Rows, Features are Your Columns A Scenario and Feature Matrix organizes scenarios and features into a simple view. The scenarios are your rows. The features are your columns. You list your scenarios in order of "MUST", "SHOULD", and "COULD" (or Pri 1, 2, and 3) .. through vNext. You list your features by cross-cutting and vertical. By cross-cutting, I mean that feature applies to multiple scenarios. By vertical, I mean that feature applies to just one scenario. It helps to think of scenarios in this case as goals customers achieve.