Microsoft Azure has a new way for subscribers to use its SQL Database. The new subscription model offers three service tiers: Basic, Standard and Premium. They will slowly phase out the previous existing service tiers: Web and Business. The new tiers are planned to deliver more predictable performance, simplify billing and avoid costly workarounds.
Depending on the workload and their business requirements, subscribes can opt for any of the service tiers. You can have a single database with defined characteristics and pricing, or multiple databases. In both cases, Basic, Standard and Premium tiers are available.