Layered architecture

Layered architecture:

• A number of different layers are defined with each layer performing a well-defined set of operations. 
• Each layer will do some operations that become closer to the machine instruction set progressively.
• Layered architecture style is the most common architecture style. Modules or components with similar functionalities are organized into horizontal layers, therefore, each layer performs a specific role within the application.
• The layered architecture style does not define how many layers are in the application.