What is the future of enterprise marketing and the CMO role? Diana O’Brien, CMO at Deloitte, tells CXOTalk about changes in how large organizations approach marketing today, special challenges in marketing services, and trends like personalization.O’Brien is Chief Marketing Officer for Deloitte’s US and global organization, leading the network’s marketing function to drive growth, build world-class creative and analytics capabilities, and champion the voice of the customer.