What is Account Executive?

Legal Definition
The job role of an Account Executive is to be responsible of looking at the company's client as well as keeping the company's-client relationships at a high standard. With an Account Executive, they are not based in one industry, they work in variety of industries. From advertising and marketing to technology and fashion. The role of an account executive includes being familiar with the totality of the company's service and knowing all the products as well as having the ability to make a sale without any problems.
-- Wikipedia
Legal Definition
A representative who manages a client, large customer, or acts as an agent broker. AKA registered representative.