Both Amazon Web Services and Microsoft Azure, offer a wide range of database services. But, when choosing between Azure and AWS for a data management platform, a business needs to be clear about their requirement. Organizations can ask several questions like: Will your enterprise use the database for analytics or transaction processing applications? Do you need a relational or NoSQL database? Does your enterprise prefer a database as a service (DBaaS) option over managing its own instance? To know more about these, follow: http://searchaws.techtarget.com/tip/Azure-or-AWS-A-cloud-database-comparison?utm_medium=EM&asrc=EM_NLN_47247618&utm_campaign=20150907_The%20public%20vs.%20private%20cloud%20cost%20debate_fchurchville&utm_source=NLN&track=NL-1839&ad=902777&src=902777

OpenStack released the latest version, Icehouse, the concept of Database as a Service (DBaaS). Tesora's goal is to help organizations to create and deploy database-based OpenStack applications who don't have a great deal of expertise with database administration.  The focus is to make database just another service rather than a central focus. To know more on OpenStack Icehouse, go through the article by Daniel Kusnetzky, a reformed software engineer and product manager.

http://www.zdnet.com/tesora-database-as-a-service-and-openstack-trove-7000028821/