The model is again a reference to encapsulate data or output for rendering.

The model is always created and passed to the view in Spring MVC.

If a mapped controller method has a Model as a method parameter, then a model instance is automatically injected by the Spring framework to that method.

Any attributes set on the injected model are preserved and passed to the View.

Read more: https://javarevisited.blogspot.com/2018/11/top-20-spring-mvc-interview-questions-answers-for-java-developers.html#ixzz7oPzyxpe5