GDMO (Guidelines for Definition of Managed Objects) is a standard for defining objects in a network in a consistent way.
GraphQL is a query language that describes how a client should request information through an application programming interface (API). In a broad sense, GraphQL is a syntax that developers can use to ask for specific data and return that data from multiple sources. Once the client defines the structure of the data needed, the exact same structure of data is returned from the server.
gRPC is a high performance, open source framework developed by Google to handle remote procedure calls (RPCs).