What do you mean by value triangle term?

Value Triangle is a concept in sales and marketing that describes the interrelationships of three factors: cost, quality and speed in the determining the value of a product or service. simple visual model called The Value Triangle illustrates this interdependency and teamwork, and the competencies required to achieve long-term success. Excellence in any of these areas can create bursts of short-term success. However, consistent attention to all four creates high performance organizations that can compete in the global marketplace.