But dig deeper and you'll find the structure a bit more complicated than it appears at first glance. For example, at Big Law firms, individual practice groups may have their own departmental ...

The Big Four giant is using a unique regulatory rule in the state of Arizona to build a first-of-its-kind legal practise.

Opinions expressed by Forbes Contributors are their own. Mark Cohen covers the global legal industry and business reinvention. Untangling the audit and advisory arms would be a big deal.