Which function would you use to conditionally show components based on the user's role in Appian?

The if() function is the appropriate choice for conditionally displaying components based on the user's role in Appian. This function allows you to evaluate a condition and return different outputs based on whether that condition is true or false. In the context of roles, you can assess whether the user belongs to a specific role and then show or hide components accordingly.

For example, you can structure the if() function to check if a user has a certain role and then return a specific component if they do, or an alternative component (or nothing) if they don’t. This provides a straightforward way to control visibility in user interfaces based on contextual information, like user roles or permissions.

The other functions provided do not directly serve this purpose. The switch() function is useful for evaluating a value against multiple cases but is not primarily designed for conditional visibility. The choice() function is typically used to translate selections made by users into action but doesn't handle conditions for showing components directly. The when() function is a controlled conditional approach mostly used in process models rather than in the user interface for conditional rendering. Thus, the if() function is indeed the most suitable for this scenario.