@Priyanka Chaudhuri Thanks for reaching out.
Yes, it is recommended to provision two different subnets for an Azure Spring Apps service instance - one for the service runtime and one for the Spring Boot applications. The reason for this is that the service runtime and the Spring Boot applications have different network requirements.
The service runtime is responsible for running the Azure Spring Apps service itself, while the Spring Boot applications are the applications that you deploy to the service. By separating them into different subnets, you can apply different network security policies to each subnet.
For example, you might want to restrict inbound traffic to the service runtime subnet to only allow traffic from specific IP addresses or subnets, while allowing more open inbound traffic to the Spring Boot applications subnet.
Additionally, separating the subnets can help with troubleshooting and monitoring. If you have issues with the service runtime, you can focus on the subnet dedicated to the service runtime, while if you have issues with the Spring Boot applications, you can focus on the subnet dedicated to the applications.
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