The 3-tier computing model for e-commerce infrastructure consists of which layers?

The 3-tier computing model for e-commerce infrastructure is designed to separate the responsibilities of different components within an application, enhancing scalability, maintainability, and efficiency. This model typically consists of three distinct layers: presentation, processing, and data-storage.

The presentation layer is responsible for the user interface and user experience, interacting directly with users and rendering the application in a manner that is accessible and intuitive. The processing layer handles the application logic—this is where business rules are applied, and data is manipulated. Finally, the data-storage layer deals with data management, including database operations and data retrieval, ensuring that the application's data is stored securely and can be accessed efficiently.

This layered approach allows for better resource allocation and makes it easier to manage each component independently, which is particularly important in e-commerce applications where reliability and performance are critical.