When Windows Azure came online for the general public in February 2010, there were only database services, websites, and virtual machine hosting available. Over time, Microsoft constantly added features and new services to Azure, and, as there were more and more offerings for Linux and other non-Windows services, Microsoft decided in April 2014 to rename Windows Azure to Microsoft Azure. This supported Microsoft's commitment to transform itself into a services company, which means that, in order to be successful, you have to offer as many services as possible to as many clients as possible. Since then, Microsoft has constantly improved and released new services. Additionally, it constantly builds and expands data centers all over the world.
Microsoft Azure
Service updates happen very frequently. That is the reason why you need to keep yourself informed. For example, the database offering you are using could have improved storage or performance capabilities. Information sources are the official Microsoft Azure blog and the Azure Twitter channel. Furthermore, information can be found on the websites of several Azure MVPs.