The Spring framework includes a robust set of beans and objects which manage web application development. The important bean lifecycle methods provide a way to manage the lifecycle of beans in an efficient manner. The most commonly used methods are @PostConstruct, @PreDestroy, @Configuration, and @Bean. The PostConstruct method is called immediately after the constructor of the bean has been executed. Inside this method any customizations regarding configuration can be done before using it in production scenarios. The PreDestroy method is called before the bean instance is destroyed by the Spring Container. This may be useful when resources have to be released or connection pooling must be taken care of. @Configuration tags indicate that this particular class will serve as a Spring Configuration class for beans etc and it enables explicit dependencies to be defined between beans at runtime depending on certain conditions. Lastly, @Bean annotation indicates that a particular method is going to produce spring managed bean so that it can be looked up later from BeanFactory or ApplicationContext for autowiring or manual lookup purposes. Thus these four important beans lifecycle methods help ensure proper functioning and management of beans in an efficient manner for web applications developed with Spring MVC framework.