Which of the following is included in the OmniScript Digital Experience layer?

In the context of the OmniScript Digital Experience layer, FlexCards are indeed a vital component. FlexCards are designed to display and manage data in a visually appealing way, allowing users to interact with and process information seamlessly within the OmniStudio framework. They serve as the building blocks for creating user interfaces that can aggregate and visualize data from various sources.

The other options, while related to the OmniStudio components, do not belong specifically to the Digital Experience layer alongside FlexCards. FlexScripts are scripts used to add logic to FlexCards, and OmniCards generally refer to a broader category of card components used in Salesforce, but they do not directly fall within the main identification of components in the Digital Experience layer.

Therefore, FlexCards stand out in this specific context as the correct answer, showcasing the key aspect of user interface interaction within the OmniScript framework.