Sentence:  THE customer is king. So some firms have started appointing chief customer officers (CCOs) to serve the king more attentively. These new additions to the (already crowded) <WSD>C-suite</WSD> are supposed to look at the business from the customer's point of view. 
Meaning of the word marked with <WSD> tags:  The group of officers of a business organization who have the word "chief" in their titles.