Layered Architecture divides an application into multiple layers, such as presentation, business logic, and data access, with each layer having well-defined responsibilities. These layers interact with each other in a hierarchical manner, where higher layers depend on lower layers, but not vice versa. This separation of concerns simplifies development, testing, and maintenance of the application.

To implement Layered Architecture in JavaScript applications, we'll organize our code into three main layers: presentation layer, business logic layer, and data access layer. Each layer will handle specific responsibilities, such as handling user input, processing business rules, and interacting with data sources.

Example:

Let's consider a simple task management application with the following layers:

• Presentation Layer: Handles user interaction and displays task-related information.
• Business Logic Layer: Implements business rules and orchestrates task-related operations.
• Data Access Layer: Manages data persistence and interacts with the database.

Layered Architecture is a powerful design pattern for building scalable and maintainable applications. By organizing code into distinct layers, developers can achieve better separation of concerns and facilitate easier maintenance and testing. In JavaScript applications, Layered Architecture can be implemented using frameworks like Node.js, allowing developers to create robust and scalable applications.