SAP Fiori is a user experience design for SAP applications that provides a simple and consistent user interface across devices. It aims to increase user productivity and satisfaction by providing fast access to relevant applications and information. SAP Fiori is designed to be role-based, delightful, coherent, simple and adaptive. It includes different types of applications like transaction apps for tasks, analytical apps for insights, and object pages for exploring data. The SAP Fiori Launchpad provides a central home page for accessing these applications.