What is the primary purpose of an Action flow in OutSystems?

An Action flow in OutSystems is used to define the logic equivalent to code written behind screens. This means that it is responsible for implementing the business logic required for the application, allowing developers to create complex workflows and interactions without manually coding every aspect.

By utilizing Action flows, developers can easily orchestrate the execution of various tasks, such as data manipulation, decision-making, and interactions with other components of the application. This high-level abstraction allows quick development and maintenance of applications through a visual programming approach, making it easier to manage and modify the application's logic as requirements change over time.

The other options focus on different aspects of application development. Defining user interface elements pertains to the visual components presented to the user. Handling data storage and retrieval specifically addresses how data is managed within the app. Managing application settings involves configuring various parameters and preferences for the app's behavior, which is separate from the core logic captured within an Action flow.