Market share, also known as PDM (Percentage of Domestic Market) value, is a measure of a company’s sales or revenue in relation to the total sales or revenue of a specific market or industry. It is a key indicator of a company’s competitiveness and success within a particular market, as it reflects the percentage of customers that choose to purchase their products or services over those of their competitors. A high market share indicates a strong presence and influence in the market, while a low market share may suggest room for growth and improvement. Companies often strive to increase their market share through strategic marketing and product development strategies, as it can lead to increased profitability and market dominance.