Hi Saibal,
You first need to select the spring cloud discovery set up you'd like to use.
I've personally set it up by using an Eureka Server and Client.
I'm taking the stance that you've got an Eureka Server running and your Spring Boot application annotated with @EnableDiscoveryClient for this case.
Axon wise you'd then want to specify the DistributedCommandBus using the a SpringCloudCommandRouter(DiscoveryClient, RoutingStrategy) to route the commands to the correct client and ideally use the SpringHttpCommandBusConnector({local}-CommandBus, RestTemplate, Serializer) to send the commands.
Hoping this helps.
Cheers,
Steven