The Microsoft Dynamics GP 2018 OData service has been updated to OData protocol version 4. The setup and configuration will be performed the same, but the updated protocol will offer better performance, as the service can now filter and page the client requests. This will lead to fewer timeout errors with large data sets, and a better experience for end users.
Refer to the following blog article for detailed instructions on deploying the OData service:
ODATA is a standardized protocol for creating and consuming data APIs. ODATA builds on core protocols like HTTP and commonly accepted methodologies like REST. The result is a uniform way to expose full-featured data APIs. See the following documentation for details on the improvements in the OData v4 Protocol.