Re: Confused about IDDD's bounded context explanation

Objects can be grouped with regard to identity and functionality, the
former for roots, the latter for bounded contexts.
Identity is used to regroup elements whose identification is relative to a
root; roots are for elements that can be directly identified at
architecture level.
Functionality is used to regroup operations whose semantics is defined by
the same business unit.
http://caminao.wordpress.com/about/objects-with-attitudes/