HP launched a second beta of the cloud computing services it plans to offer commercially as the company prepares to enter the market for IaaS (Infrastructure-as-a-Service).

The company's HP Cloud Compute, HP Cloud Object Storage and HP Cloud Content Delivery Network services can now all be accessed by the public. All the services will be offered on an hourly pay-as-you-go model.

This beta program expands upon a smaller, free beta portfolio of cloud services offered by the company last September.

The company will be marketing these services for organisations that want to run large-scale web services from the cloud. HP Cloud Compute offers virtual servers. HP Cloud Object Storage offers object-based storage, and the HP Cloud Content Delivery Network provides a globally distributed caching layer to speed the delivery of services.

For these services, HP has assembled an impressive roster of over 40 partners to offer individual technology components and complementary offerings. For instance, EnterpriseDB provides a version of the PostGres open source database. CloudBees provides a platform for running Java applications. Engine Yard provides a similar platform for Ruby on Rails and PHP. Spirent provides development tools and RightScale, ScaleXtreme and Smartscale Systems provide management tools.

The company also offers services for block-based storage and for hosting data on MySQL deployments, though those remain closed as private betas.