What is a requirement for business users of S/4HANA?

Fiori serves as the primary user interface for SAP S/4HANA, providing a modern, intuitive, and responsive user experience tailored for business users. The design principles of Fiori focus on enhancing productivity and usability by presenting information clearly and allowing for easy navigation across applications. With the emphasis on providing role-based access and simplifying tasks, Fiori becomes a requirement for users who operate within S/4HANA, as it is optimized to take full advantage of the platform's capabilities.

Other options, while they may represent different aspects of SAP systems, do not align with the requirement specific to business users of S/4HANA. The use of alternative user interfaces or database platforms may not leverage the comprehensive benefits and functionalities that Fiori provides, which are integral for an efficient and effective user experience in the context of S/4HANA.