AppConfig : IoC Conatiner / DI container -> 객체를 생성하고 관리하며 의존관계를 주입해준다 //AppConfig.java @Configuration public class AppConfig { @Bean public MemberService memberService() { return new MemberServiceImpl(memberRepository()); } @Bean public OrderService orderService() { return new OrderServiceImpl(memberRepository(), discountPolicy()); } @Bean public DiscountPolicy discountPolicy(){ // return new Fi..