One of my clients asked to calculate the DTU’s required for an existing database before migrating to Azure SQL Database. Pricing Azure SQL Database is different from traditional SQL Server licensing. Azure SQL Database pricing depends on the database service tier options ,such as Database Transaction units and the maximum size of the database.
Azure SQL Database offers Basic, Standard, Premium, and Premium RS service tiers for both single databases and elastic pools. The cost of Azure SQL Database directly relates to which tier and performance level you are using. To determine service tier and performance level and database throughput units (DTUs) with the help of Azure database DTU calculator.
