What is Azure SQL Managed Instance?
Azure SQL Managed Instance is a fully managed database service offering near-complete compatibility with SQL Server Enterprise Edition. Unlike Azure SQL Database, Managed Instance supports features like cross-database queries, CLR, SQL Server Agent, Service Broker, and linked servers. The service is specifically designed for migrating existing SQL Server workloads, often without major application changes.
Managed Instance runs in its own virtual network, providing full network isolation and native VNet integration for hybrid scenarios.
Core Features
- SQL Server compatibility: Support for features like CLR, Agent Jobs, Service Broker, and cross-database queries.
- VNet integration: Dedicated instance in your own virtual network with private IP addresses.
- Automatic backups: Point-in-time recovery with up to 35 days of default retention and optional geo-replication.
- High availability: General Purpose and Business Critical tiers with 99.99% SLA, up to 99.995% with zone redundancy enabled; Business Critical additionally includes in-memory OLTP.
- Azure Hybrid Benefit: Use existing SQL Server licenses to reduce compute costs.
Typical Use Cases
Lift-and-Shift Migration: Migrating existing SQL Server databases to the cloud without major application changes or refactoring.
Consolidation: Combining multiple SQL Server instances on a single Managed Instance, complemented by instance pools for cost optimization across many smaller workloads.
Modernization with Hybrid Architecture: Gradual cloud migration with existing on-premises connections via ExpressRoute or VPN.
Benefits
- Minimal migration effort thanks to a largely identical engine to SQL Server.
- No infrastructure management of your own: automatic patches, backups, and high availability.
- Enterprise features such as CLR, SQL Agent, and Service Broker included.
- Cost flexibility through reserved capacity for long-term planned workloads.
Frequently Asked Questions about Azure SQL Managed Instance
What is the difference from Azure SQL Database?
SQL Managed Instance offers near-complete SQL Server compatibility, including cross-database queries, CLR, SQL Agent, and Service Broker. SQL Database is more abstracted and optimized for cloud-native applications. Managed Instance is often the better choice for migrating existing SQL Server workloads with complex dependencies.
How do I migrate from SQL Server to Managed Instance?
The Azure Database Migration Service supports online migrations with minimal downtime. Alternatively, you can use native backup/restore via Azure Blob Storage. The Data Migration Assistant analyzes compatibility beforehand and identifies potential issues.
What service tiers are available?
General Purpose offers standard performance with remote storage. Business Critical provides higher IOPS, local SSD storage, in-memory OLTP, and built-in read replicas. Both tiers offer a 99.99% SLA, which increases to up to 99.995% with zone redundancy enabled.
How does network integration work?
Managed Instance is deployed in a dedicated subnet of your own VNet. Access happens via private endpoints, ExpressRoute, or VPN Gateway; public endpoints can be optionally enabled.
Can I run multiple databases on one instance?
Yes, a Managed Instance can host a large number of databases (the exact limit depends on the configuration). For cost-effective multi-tenancy, Microsoft also offers instance pools that share compute resources across multiple instances.
What does Azure SQL Managed Instance cost?
Billing is vCore-based, depending on the chosen tier, hardware configuration, and region. Reserved capacity can significantly reduce costs compared to pay-as-you-go for predictable, long-term usage. Exact prices are available on the official Azure pricing page.
Integration with innFactory
As a Microsoft Solutions Partner, innFactory supports you with Azure SQL Managed Instance: from migration planning with compatibility analysis to executing the migration to ongoing optimization and cost management.
Note: All product information on this page has been compiled with care, but is provided without guarantee and may be outdated or incomplete. Cloud services evolve rapidly — features, pricing, SLAs, and availability change frequently. Authoritative and up-to-date information can only be found on the official product page of Azure (official documentation). This page does not represent an offer by Azure.
