Gateway is a service responsible for routing requests to/from or between Servables and Applications and validating these requests for matching a Model's/Application signature.
The Gateway maps a model’s name to a corresponding container. Whenever it receives a request via HTTP API, GRPC, or Kafka Streams, it communicates with that container via the gRPC protocol.
Manager is responsible for:
Building a Docker Image from your ML model for future deployment
Storing these images inside a Docker Registry deployed alongside with
Versioning these images as Model Versions
Creating running instances of these Model Versions called Servables
inside Kubernetes cluster
Combining multiple Model Versions into a linear graph with a single
endpoint called Application