Recently Microsoft has posted a job post on Microsoft careers site stating that they are working on a Windows Azure-based service and integrating with certain Microsoft online services and Windows 8 client backup which clearly means that Windows 8 would be have an option to backup files online via Windows Azure.
Here is what the job post reads-
The Windows Server Solutions group is under the Server and Cloud Division. Our mission is to promote adoption of Microsoft server and cloud platforms/products by using features that appeal to specific market segments. The segments we currently focus on are homes, educational institutions and small businesses. (Windows Home Server, Windows MultiPoint Server and Windows Small Business Server are our key product lines.) We work on a wide range of technologies to appeal to these segments – from kernel-level to native UI to managed UI to web services. For instance we have developed a centralized PC backup, extensible storage, UPnP-based router configuration utilities, a remote web workplace with a GFS backend and a simplified IT management UI. We are currently working on a Windows Azure-based service and integrating with certain Microsoft online services and Windows 8 client backup. Many of the features we develop have ended up in the Windows Client and Windows Server OSes.
Another job has been posted by Microsoft stating that they would be integrating Microsoft’s online service with Windows 8.
Want to work on products that your friends and family use every day? Windows Live designs and runs some of the largest web applications in the world. We are Cloud Directory Platform, and our services are used by Windows Live, Office, Windows Mobile, Xbox, Bing, and MSN-branded properties. We are the backend of Windows Live providing identity (LiveID), contacts (ABCH), and social graph (SUP) for individuals and Microsoft services and applications. For the most part, you would know these as Messenger and Hotmail, as well as the entire Windows Live suite. We are seeking a highly motivated individual to come join our team and pour passion and talent into building some of the most used services on the planet. We are a growing team with a strategic and highly visible charter helping to build and operate some of Microsoft’s most strategic Internet assets. Our service supports hundreds of millions of users, who exchange billions of instant messages, photos and email each day, and store billions of contact relationships in our service. We live the life of "software and a service" every day, at high scale and you will play a pivotal role as we integrate our online services with Windows 8.