azuresql-migration-path-tier-constrained

Status: IN

Azure SQL migration targets are tier-constrained at every level: Managed Instance provides lift-and-shift with SQL Server 2008 backward compatibility but within a 16 TB ceiling, while Database offers scale beyond 128 TB via Hyperscale's distributed architecture but with tier-dependent HA tradeoffs (General Purpose cold-cache penalty vs Business Critical local SSD) — making tier selection inseparable from migration planning.

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