Azure SQL Database Managed Instance is a fully managed SQL Server Database Engine hosted in Azure cloud that provides most of the Azure SQL Pass and SQL Server functionalities, such as linked servers and built-in free secondary read-only replicas. In this post you will see how to use linked servers to connect to readable secondary... Read more

https://blogs.msdn.microsoft.com/sqlserverstorageengine/2018/08/27/create-linked-server-to-readable-secondary-replica-in-managed-instance-business-critical-service-tier/