New Azure SQL Database service tiers—Basic, Standard, and Premium—are generally available. The tiers deliver predictable performance and enterprise-class features across a spectrum of seven performance levels for light- to heavy-weight transactional application demands.
Customers using these tiers can also enjoy:
• 99.99 percent uptime SLA*, one of the highest for Azure services.
• Hourly billing for greater flexibility and budget management.
• Reduced prices (up to 50 percent from previously published generally available pricing).
Additionally, customers can access a new Standard performance level, S0, for a cost-effective step between Basic and S1.
All general availability pricing for Basic, Standard, and Premium tiers will take effect on November 1, 2014.