Which layer of SAP S/4HANA provides a universal language to read and process data across...

 Core Data Services (CDS) is a layer of SAP S/4HANA that provides a universal language to read and process data across different applications. CDS is based on SQL and extends it with domain-specific features and annotations. CDS views are reusable and can be consumed by various interfaces such as SAP Fiori, OData, or SQL. CDS views also enable the definition of semantic data models that expose the business logic and meaning of the underlying data sources. References = [SAP S/4HANA Cloud Public Edition - Introduction to Core Data Services], [SAP S/4HANA Cloud Public Edition - Core Data Services in SAP S/4HANA Cloud]