**Why Self-Hosted IR (SHIR)**: ADF runs in Azure; on-prem data sources (SQL Server, file shares) are not directly reachable. SHIR runs on-prem, registers with ADF, executes data movement locally. **Architecture**: Install SHIR on Windows/Linux VM; requires outbound HTTPS (port 443) to Azure. Register with auth key from ADF. SHIR pulls jobs from ADF control plane; executes copy/transform on-prem. Use ExpressRoute or VPN for secure, predictable connectivity....
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