In simple terms, sales is a process in which a transaction takes place between two or more parties, wherein the buyer receives the product, service or any other offering and the seller gets something of value in return (usually money). In an organization, sales department plays a key role in the success of the business as it is responsible to bring revenue to the organization. If you also want to be a part of the sales department of a reputable company or advance your career in sales, it is highly recommended to undertake one of the online sales certification courses.