Which component determines whether an item appears on a live application?

The component that determines whether an item appears on a live application is Availability. This concept directly relates to the configuration and deployment of items within an application environment, particularly in Guidewire PolicyCenter. When an item is marked as available, it indicates that the item is active and should be shown to users in real-time interactions with the application. This can include various elements such as coverage options, discounts, or endorsements that are set to be visible based on certain criteria.

In contrast, the other components do not play a direct role in determining live application visibility. Insurance Premium is related to the cost calculations for policies but does not control what is displayed. The Policy Model pertains to the structure and rules governing policies but does not inherently decide visibility at runtime. Transaction History reflects past interactions and changes but does not influence what is currently presented in the application. Thus, Availability is the critical factor for showing items on a live application.