Usability as core domain?

Hi,


Is it possible for e-commerce business (selling certain services related to
event organizing) to have usability as a core domain? The business has few
web based applications dealing with various areas of the business. From
what I read about DDD most businesses have at some point a core domain (a
part of business that brings most value and/or competitive advantage to
that business).


It seems that business people want to focus on usability of one of their
web based applications as a way for their business to distinguish itself
from competitors. I just can't wrap my head how would that fit with DDD. I
always pictured a core domain as one where you would make heavy use of
tactical DDD patterns and other GoF design patterns. Usability as core
domain doesn't fit that picture.


Thanks