What is Cross functional enterprise system?

O'Brien, JA (2002), pg 127 says that "many organisations are using information technology to develop integrated cross-functional enterprise systems that cross the boundaries of traditional business functions (such as marketing and finance), in order to reengineer and improve vital business pocesses all across the enterprise. These organisations view cross-functional enterprise systems as a strategic way to use IT to share information resources and improve the efficiency and effectiveness of business objectives......"