AZ-305 · Question 27 · Domain 2.4: Design a data storage solution for non-relational data
You are designing an Azure Cosmos DB database for a multi-tenant IoT application.
The application receives telemetry from millions of devices across 5,000 different corporate customers (tenants). You need to select a partition key for the telemetry container.
Requirements:
Which partition key strategy should you recommend?
Answer options:
A synthetic partition key combining TenantId and DeviceId (e.g., TenantId_DeviceId).
TenantId
DeviceId
Date/Timestamp
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