Service tiers
Azure SQL Database is available in two flavors:
- Elastic database pools
- Single databases
Elastic database pools
Elastic database pools are a great solution for managing multiple databases, scaling their performance according to the databases' needs, which means it is a good fit for databases with unpredictable usage demands, and that leads to a saving on credits. Elastic database pools share performance across many databases since all of these databases are built on a single Azure SQL Database server.
Note
At the time of writing, elastic database pools are generally available in all Azure regions, except in West India, as they are in the preview there. However, they will be generally available there too as soon as possible.
Single databases
Single databases are a good fit for a set of databases with predictable performance, where the required resources for the databases are predetermined.
Service tier types
At the time of writing, there are four service tiers for Azure SQL Database: Basic...