There are two main types of architectures for Spring MVC applications: Model 1 and Model 2.   Model 1 Architecture: It is the traditional approach where the entire application is built as a single unit. All components, including the presentation layer, business logic, and data access layer, are tightly coupled. This approach is simple to develop and deploy but it has some drawbacks. For example, it is difficult to make changes to the presentation layer without affecting the other components.   Model 2 Architecture: It is a more modern approach where the presentation layer is separated from the business logic and data access layers. This makes it easier to modify the presentation layer without affecting the other parts of the application. Model 2 architecture is more scalable and maintainable than Model 1, but it is also more complex to develop and deploy.   Depending on your needs, you may choose one or more architectures for your Spring MVC application. If you need a simple application that is quick to develop and deploy, Model 1 might be the best choice. If you need a more scalable and maintainable application, Model 2 is probably a better option. There are several benefits of using a Model 2 architecture.  Increased flexibility and modularity: Model 2 architectures are much more flexible than Model 1, as they allow you to change or add functionality without affecting the rest of the codebase, making them ideal for applications that need to be constantly updated or extended.  Better separation of concerns: Model 2 architectures also tend to have a better separation of concerns, as each component is only responsible for a small part of the overall application. This makes the code easier to understand and maintain.  Easier to test: Since Model 2 architectures are more modular, they are also easier to test. Each component can be tested in isolation, without affecting the others.  Improved performance: Model 2 architectures can also lead to improved performance, as each component can be optimized independently. This is in contrast to Model 1 architectures, which are often slower due to their monolithic design.  Spring MVC is flexible enough to support both Model 1 and Model 2 architectures. You can even mix and match components from both architectures to create a hybrid approach that meets your specific needs.