You can integrate them using private endpoints as explained on this article. The same article explains how to make the configuration of the endpoint and related network policies.
How to deploy a Azure SQL databases in AKS
Rajamannar A K
86
Reputation points
I have a spring boot application deployed in AKS, but it also uses a DB for CRUD operations. How to integrate a SQL database into an application in AKS. Although I looked into Statefulset deployment, I was unable to combine the two services.