The best way to maintain customer satisfaction as you expand your business is to provide consistent service quality. This means making sure that customers can count on the same level of customer service, no matter how much your business grows. You should also focus on increasing efficiency and optimizing processes to improve customer experience in a cost-effective manner. Additionally, providing supportive and comprehensive customer care, such as self-service solutions, will go a long way in keeping customers satisfied with their experience. Finally, make sure to measure customer satisfaction regularly to ensure that any changes are having the desired effect.