Gluon is a Model-Driven, Extensible Framework for L3 Networking Service. This framework enables Telecom Service Providers to provide its customers with L3 networking services on-demand. Gluon uses model-driven approach to generate APIs (including objects, database schema, and RESTful API endpoints) from a YAML file which models the L3 Networking Service. When a Telecom Service Provider needs to launch a new service, it only needs to model the new service in a YAML file. Gluon framework generates the APIs accordingly. And then applications can use those APIs to provide the new service. Thus Gluon helps Telecom Service Provide accelerate the time-to-market and achieve business agility through its extensibility and scalability in generating API for new use cases and services.