There is a saying “Starting a business is difficult and maintaining a business is even more difficult”. The truth is the competition indeed is getting more and more fierce along with more players joining the game and competing with you. New customer acquisition costs are definitely increasing, so the question is how to sustainably defend your business and maintain the customer loyal to your product and service. It’s for the purpose of maintaining business competition cutting-edge at the end and avoiding losing profit or even losing money. Understanding your customer lifetime value and calculating, getting a right number to refer is vital.