Final answer:
Application architectures serve the purpose of providing structure and organization to software applications, defining how different components communicate and how data flows. They ensure scalability, maintainability, and ease of updates. An example of an application architecture is the Model-View-Controller pattern.
Step-by-step explanation:
The purpose of application architectures is to provide a structure and framework for developing and organizing software applications. They define how different components of an application communicate with each other and how data flows through the system. Application architectures help ensure that applications are scalable, maintainable, and can be easily updated or modified. For example, a common application architecture is the Model-View-Controller (MVC) pattern, which separates the application logic into three components: the model (data), the view (user interface), and the controller (logic).