Microsoft's Windows Azure and Amazon's Elastic Compute Cloud undertake two very dissimilar cloud computing technology troubles but are intended to imitate one another over time, Microsoft cloud official Tim O'Brien speaks.

While Windows Azure is a platform-as-a-service cloud, providing developers the tools they require building and organizing Web applications, Amazon EC2 is chiefly an infrastructure-as-a-service cloud, contribution on-demand access to customizable effective machine instances.

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Azure make simpler the building of web applications in a way that Amazon does not, but Amazon's cloud-based effective machines have the advantage of working with numerous programming models, O'Brien says, expect that eventually Microsoft will shift more into infrastructure-as-a-service and Amazon will intersect into platform-as-a-service (PaaS).

O'Brien, senior executive of Microsoft's Platform Strategy Group, converse his obtain on the cloud market in an meeting with Network World, plus a public appearance at the current Cloud Leadership Forum, hosted by IDC and IDG Enterprise.