Wikipedia describes Microsoft Azure as “a cloud computing platform and infrastructure, created by Microsoft, for building, deploying and managing applications and services through a global network of Microsoft-managed and Microsoft partner hosted datacenters.” This is a pretty good general description of what Azure provides to you.
Here’s Microsoft’s description of Azure: “a growing collection of integrated cloud services—analytics, computing, database, mobile, networking, storage, and web—for moving faster, achieving more, and saving money.”
Azure allows you to do the following:
Use the skillsets you already possess and the technologies with which you already are familiar to develop and deploy solutions using SQL Server.
Work with a wide range of operating systems, programming languages, databases, and devices.
Integrate Azure with your existing IT environment, including Active Directory for single sign-on.
Scale up and scale down your Azure services based on demand so you only pay for what you need when you need it.
Maintain data privacy. Microsoft with Azure services was the first major cloud provider to adopt the new international cloud privacy standard, ISO 27018.
Encrypt your SQL Server data both at rest and on the wire.
Have enterprise-grade service-level agreements (SLAs) on services, 24/7 tech support, and round-the-clock service health monitoring.
Finally, you might be asking: Why Microsoft? A good answer is that Microsoft is the only vendor positioned as a Leader across Gartner’s Magic Quadrants for Cloud Infrastructure as a Service, Application Platform as a Service, and Cloud Storage Services for the second consecutive year. Another answer is that Microsoft is the only vendor to offer SQL Server as a service and SQL Server in IaaS. A final answer is that Microsoft is extending the capabilities of SQL Server in Azure at a faster pace than any other vendor.
Source of Information : Migrating SQL Server Databases to Azure