OData (Open Data Protocol)
OData is a standardized protocol to build and consume RESTful APIs. While developing APIs you might question the way to structure your endpoints, how to filter data, how to paginate results, and so on. OData provides a set of conventions and best practices to address these common challenges.
It help developers to create APIs that are easily consumable and interoperable across different platforms and technologies. It is widely used in enterprise applications, including SAP systems, to expose data and services in a consistent manner.
Relation with SAP
OData is heavily used in SAP systems, especially in SAP S/4HANA and SAP Fiori applications. It serves as the primary protocol for communication between the front-end (UI) and back-end (server) components of SAP applications.