This past week spurred quite a bit of updates from some of the biggest players in the cloud, including Citrix. The virtualization vendor held its annual Citrix Synergy7 conference this week, where it has announced a partnership with Amazon to optimize some of its main services for  for Windows and XenServer customers. Further, Citrix also announced the birth of Project Olymus as a part of a team-up with Rackspace.

Another cloud company that had a major development is Fusion-io. The company updated its S1 SEC filing with plans to sell its stock for $13 to $15 at its upcoming IPO  – a price range that could raise its valuation to over $1.1 billion. It also shed some light on its earnings, and revealed that its top 10 customers starting with Facebook account for the bulk of its sales, among other things.

Over at the personal cloud, the social networking giant had an update of its own –a new partnership with Spotify. The social network will offer Spotify’s cloud-based music service to some of its members, and sources familiar with the matter said the launch could come as early as a week or two.

Hewlett-Packard is also making strides in the consumer cloud, as it gradually reshapes its business strategy. Specifically, printing is one of the sub topics the company is focusing on, and HP announced it has acquired Salt Lake City-based Printelligent to boost its Printing-as-a-Service.

Also looking to strengthen its offering, DotCloud made an acquisition too. The company acquired San Fransico PaaS developer Duostack for an undisclosed sum. Both of the companies are based in San Fransico, and the deal is meant to integrate Duostack’s offering, which features MongoDB support, with that of DotCloud. Support for the popular no-SQL database will allow DotCloud to reach a much broader range of customers, as well as offer more to existing ones.