How we cut down the forest and got rid of the elephant

Developing a product from scratch can face many problems and difficulties. One of them is how to draw a good design. And what does 'good' design mean? What are the KPIs for evaluating design? What can a business analyst do when developing layouts and interface design? 

Answers to these and other questions can be found in this talk. I will tell and show how two different approaches of business analyst and designer working together affect the end result.