Microsoft Azure SQL Database Standard S3 - overage fee

Developers building software-as-a-service (SaaS) applications can use Azure SQL Database to provide flexibility to support both explosive growth and profitable business models. For workloads with unpredictable database resource consumption, the elastic database model gives you the ability to pool resources to use among a group of databases. Instead of overprovisioning to meet peak demand, you can use an elastic database pool to let hundreds or thousands of databases use resources within a budget that you control.