The product life cycle consists of four stages - introduction, growth, maturity, and decline.In the introduction stage, sales are modest and marketing efforts are focused on increasing consumer awareness and product trials.The growth stage is characterized by increased recognition and popularity, with a focus on setting the product apart from competitors.Maturity is the stage where the product stabilizes, sales level off, and the focus is on maintaining market share and efficiency.The decline stage occurs when sales and profitability start to decline due to competition from new or innovative products.