Affärslogik

Affärslogik, or business logic, refers to the rules, calculations, and procedures that govern how a business operates and makes decisions. It defines the specific processes and conditions that dictate the behavior of a software application in response to user input or other data. Essentially, it's the core set of instructions that determine how data is created, stored, displayed, and modified within a system to reflect real-world business operations.

This logic encompasses various aspects of a business, such as pricing calculations, inventory management rules, customer validation processes, order fulfillment workflows, and compliance requirements. It translates the business's operational policies and strategies into executable steps for a software system. For example, if a business has a rule that offers a discount for orders over a certain amount, this discount calculation would be part of the affärslogik.

Separating business logic from other parts of an application, like the user interface (UI) or data access layer, is a common software development practice. This separation, often referred to as layering or architectural patterns, makes the application more maintainable, scalable, and easier to update. Changes to business rules can be implemented without necessarily altering the UI or database structure, and vice versa. This modularity allows different teams to work on different layers concurrently and facilitates easier testing of the business rules in isolation.