The difference between Apple buy in and apple pay

Recently, apple payment was rejected , Because we provide partial content services , Apple has refused 4 Time , We are required to use internal payment , I have no choice but to pay within the survey , But during this period, I found another Apple Pay, Then I made a curious investigation , You can also go to Apple's official website for details , I am in a hurry , So I “ Baidu ” 了 ,

https://www.jianshu.com/p/e3bc47e81785