Many people are confused on what marketing really is.
First of, let us define what is not marketing.
Selling is not marketing. Often, people think that mere selling is marketing. But selling is an important part of marketing.
Others think that advertising is marketing. That promoting the product, service or company is marketing. However, promotions is just as important as selling is to marketing.
While others think that marketing is the actual research and planning of any effort to move the product or service to the customers. Or even the delivery of goods.
All these are not marketing, but mere parts of marketing.
Marketing can be defined as a set of activities involving the exchange of goods, services and ideas to satisfy customers and make profit.
Marketing is different from advertising, public relations and sales. Though they are all related and important to any business. (Read here: Marketing vs Advertising vs Public Relations)