What is Application Layer?

The application layer is made up of the user interface (UI) that is responsible for customer interaction, often via a mobile or desktop application. The application layer also consists of business logic, which is responsible for exchanging certain algorithmic data so that applications are able to function optimally and make use of smart contracts and other mechanisms. The application layer is considered the client-layer or front-end of the system, with the opposite end of the system known as the bank-end or data access layer (DAL).