Video: Rackspace vs Windows Azure

Rackspace Cloud offers four alternative hosting products: Cloud Servers for on-demand computing power; Cloud Sites for robust web hosting; Cloud Load Balancers for easy, on-demand load balancing and high availability; and Cloud Files for elastic online file storage and CDN.Rackspace Cloud hosting customers never need to worry about buying new hardware to meet increasing traffic demands or huge traffic spikes.
Windows Azure is an open and flexible cloud platform that enables you to quickly build, deploy and manage applications across a global network of Microsoft-managed datacenters. You can build applications using any alternative language, tool or framework. And you can integrate your public cloud applications with your existing IT environment.
Face to face in the news:

2018 - Rackspace acquired Salesforce specialist RelationEdge to win over Windows Azure

Rackspace has acquired RelationEdge, a Salesforce implementation partner . Rackspace is still best known for its hosting and managed cloud and infrastructure services. So the company clearly wants to expand its portfolio, though, and add managed services for SaaS applications to its lineup. It made the first step in this direction with the acquisition of TriCore last year, another company in the enterprise application management space. Today’s acquisition builds upon this theme. Thereby Rackspace provides more SaaS-services than Windows Azure

2014 - Rackspace guarantees 99.99% uptime of private cloud to keep up competition with Windows Azure

Rackspace is so confident with the new release of its private cloud software on its cloud computing open source OpenStack creation, that it's guaranteeing success for enterprise workload production. Rackspace debuted its private cloud in the summer of 2013, and now beefed up its offering with a 99.99 percent OpenStack API uptime guarantee, increased scalability to hundreds of nodes and DevOps automation services for application lifecycle management. Recently Rackspace can't compete with Amazon Web Services, Google Compute Cloud and Microsoft Azure that can afford to provide much lower pricing, so Rackspace tries to use momentum through its private cloud.

2010 - Rackspace added Windows to its Cloud

Rackspace Cloud
Rackspace Cloud platfrom, which, due to affordable pricing and ease of administration, attracted a lot of customers from Amazon, has added Windows Cloud Server to it's pool of services. Previously, it was possible to create only Linux-instances. However, unlike Linux-servers, Rackspace's pricing for Windows-instances is not so attractive and is higher than at Amazon EC2 and Windows Azure. Minimal instance configuration (1 GB of memory, 40 GB storage and 30 Mb/s bandwidth) costs $0.08/hour (about $58/month). Amazon's small Windows-server 1.7Gb/140Gb (i.e. about 2 times higher) costs $ 0.12/hour. In addition, Windows-server at Rackspace can only be scaled up and there is no way to scale down. Much more interesting is Rackspace recent initiative to create open-source cloud platform Openstack.