Benefits of Fixed Price

Usually preferred engagement model for software service companies is Time & Material. Payment is rather stable and depends on FTE numbers then. The evil comes in some time, when it's evident that the principal delivery is often not working software, but humans.

New approach is to work via fixed price with special terms of selling specific volumes of action points or story points. Then the focus is on the work and performance criteria, as velocity, quality, technology profitability, and product value.

So Agile T&M wrapped into FP language matters!