ISO 9001 helps ensure that the products and services supplied to customers are consistent and of superior quality. Customer satisfaction is ISO 9001's primary concern, therefore the standards under ISO 9001 are developed to maintain and exceed customer satisfaction.ISO 9001 helps ensure that the products and services supplied to customers are consistent and of superior quality. Customer satisfaction is ISO 9001's primary concern, therefore the standards under ISO 9001 are developed to maintain and exceed customer satisfaction.