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The concept of "fit for use" aligns closely with the customer's perspective on quality, as it emphasizes whether a product meets the user's needs and expectations in practical terms. When a customer evaluates quality, they often consider whether the product fulfills its intended function and provides the value they anticipate. This view means the product should be reliable, perform well under typical usage conditions, and ultimately satisfy the customer's requirements.

While "fit for purpose" also encompasses aspects of aligning a product with user needs, it tends to focus more on the specifications set by stakeholders rather than the end-user experience. Quality control and quality assurance are systematic processes aimed at maintaining and improving product quality, but they are more internally focused, assessing the processes and measures designed to ensure that quality standards are met rather than directly reflecting the customer's view.