Which user role can customize the SAP Fiori launchpad user interface by using APIs to create buttons and add user options?

The user role that can customize the SAP Fiori launchpad user interface by using APIs to create buttons and add user options is the Developer. Developers possess the necessary technical expertise and access to the appropriate tools and APIs that allow for the modification and enhancement of the Fiori launchpad. They can write custom code and utilize the available APIs to create tailored functionalities and interfaces that meet specific business requirements.

This role is essential in providing a personalized user experience, as they can design and implement the necessary components that improve the usability of the launchpad. Administrators might manage user permissions and system settings but typically do not engage in development tasks. Project Managers focus on overall project execution and delivery rather than UI customization. End Users interact with the launchpad but do not have the ability to alter its configuration or functionality.