Azure SQL Database managed instance now supports larger regional resource limitations
Published date: June 12, 2019
Azure SQL Database managed instance has increased both types of regional limits – the maximum number of subnets and maximum number of instances that could be deployed per region, allowing much larger managed instance deployments without the need to request quota increase through Azure support tickets.
For example, customers with Enterprise Agreement subscriptions can now deploy managed instances in up to 15 subnets (the previous limit was 3) while the total number of vCores in General Purpose service tier was increased to 1440 vCores, allowing deployment of 180 managed instances of 8 vCores (while the previous limit was 12 instances).
For more details, see Azure SQL Database managed instance regional resource limits.