**Why IR type matters**: Data lives in different places; IR is the compute that moves and transforms it. **Azure IR**: Managed, serverless. For cloud-to-cloud (Azure SQL, Blob, ADLS). Auto-scales; zero maintenance. Use by default. **Self-Hosted IR**: Runs on-prem or in your VNet. For accessing on-prem SQL, file shares, or private endpoints. You manage VM, updates, scaling. **Azure-SSIS IR**: Hosts SQL Server Integration Services. For lifting existing SSIS packages....
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