Which method is not typically used for managing performance in Azure SQL Database?

Increasing the number of physical servers is not a method typically used for managing performance in Azure SQL Database because Azure SQL Database is a platform as a service (PaaS) offering. In this model, the underlying infrastructure, including the physical servers, is managed by Microsoft. Users do not have direct access to or control over the physical hardware. Instead, performance management is focused on other factors that can be adjusted within the service, such as scaling the service tier, implementing effective indexing strategies, and utilizing tools like query performance insights. These methods allow database administrators to optimize performance without needing to manage physical servers directly. The emphasis on the PaaS aspect means that scaling and optimization can be handled through Azure’s management tools rather than through hardware adjustments.