Stephan Grad CEO A-COMMERCE Usability and Customer Centricity are keys in our E-Commerce ecosystem - those two parameters decide if you are a successful merchant who is building up a long lasting company or if you just have one time buyers who won´t ever come back. Both parameters are essential and also quite easy to improve on a day by day basis - Stephan Grad, Managing Director of A-COMMERCE will show you the best way on becoming a successful and customer oriented Merchant in no time with Userbrain and Crowd UX Testing.