How would you answer an interview scenario involving Azure SQL Database in Microsoft Azure?

For an interview scenario involving Azure SQL Database, I would first clarify the business goal, scale, constraints, and the failure or quality attribute the interviewer wants to explore. Azure SQL Database is a managed relational database service based on SQL Server. In this scenario, for a business-critical API, describe how you would size Azure SQL, handle transient errors, secure access, monitor slow queries, and design regional recovery. For production, use appropriate service tiers, resilient client connections, Entra authentication where possible, auditing, Defender, query monitoring, backup retention, and geo-replication when required. I would then explain the main alternatives and tradeoffs, identify likely failure modes, and describe how I would validate the solution through testing, observability, security controls, and recovery or rollback planning.