Oracle Fusion Supply Chain Management (SCM) is a suite of applications built on a cloud-based platform. The suite encompasses a wide range of SCM functionalities, including procurement, order and inventory management, product lifecycle management, logistics, and manufacturing. Oracle Fusion SCM is designed to help businesses manage their supply chains with more visibility and control, improving efficiency and reducing costs.

Oracle Fusion SCM REST APIs provide a way for third-party applications to interact with the Oracle Fusion SCM suite. REST (Representational State Transfer) is a software architectural style that provides a framework for the creation of web services, which can be used to transmit data over HTTP.

The APIs provide a variety of services, such as retrieving, creating, updating, and deleting resources in the Oracle Fusion SCM system. Examples of resources might include purchase orders, inventory items, and supplier information. The REST APIs follow standard HTTP methods:

• GET is used to retrieve information about a resource.
• POST is used to create a new resource.
• PUT or PATCH is used to update a resource.
• DELETE is used to remove a resource.

To use these APIs, you would typically need to authenticate your application, make a HTTP request to a specific URL (endpoint), and parse the response. The response will be formatted in JSON or XML, which can be easily processed by most programming languages.