Need recognition is the first stage of the buyer decision process in which the consumer recognizes a problem or need.

Information search is the stage of the buyer decision process in which the consumer is stimulated to search for more information.

Evaluation of alternatives is the stage of the buyer decision process in which the consumer uses information to evaluate alternatives brands in the choice of set.

Purchase decision is the stage of the buyer decision process in which the consumer actually buys the product

Post- purchase consumption is the stage of the buyer decision process in which consumers tale further action after purchase based their satisfaction or dissatisfaction.

Advertising is paid, non-personal communication from an identified sponsor using mass media to persuade or influence