Today, however, it is no longer adequate to define quality based on defect levels. It means that the promised features must be in the product and must be working. Quality Perceptions over Product Lifetime Introduction Enthusiasts or technology nuts buy initial products. These people like the thrill of playing with new technology. Early Adopter Visionaries have a specific problem and their pain can be remedied by this product.
Visionaries willingly accept workarounds for defects or incomplete functionality.
Mainstream Mainstream users are pragmatists. The Conservative users wait for products to live up to their advertised reputations. They want the features working as you have promised, but additional features are not high on their list. These people want software producers to guarantee there will significantly fewer defects than in previous software releases. With the product quality model, it is easier to define and prioritize project ship goals.