LoRa Server forwards received uplink frames and acknowledgements to a so called application-server component. You can either use LoRa App Server (an application-server provided by the LoRa Server project), or implement your own application-server.
LoRa Server supports sending data for different devices to different application-servers. See routing-profile for more information.
LoRa App Server is a reference implementation of an application-server compatible with LoRa Server.
It is also possible to implement a custom application-server. The
application-server API has been defined as a gRPC service
which allows you to easily generate stubs for various programming languages.
See the gRPC site for more information about
the gRPC framework and how to generate source-code using