The Sun Storage Cloud and the Sun Compute Cloud will compete with Amazon Web Services' storage and compute services. Sun has been testing its services internally and will roll them out gradually starting this summer, it announced Wednesday. The company planned to demonstrate the services at its developer conference in New York City.

The services are aimed at developers, students and startups, and intended primarily for testing and developing new applications over the Internet using Sun's hardware. The idea is to help companies avoid having to buy new equipment, and to let developers set up their own infrastructure without needing an IT department to do it for them. They'll also be able to add more computing resources quickly, to test an application under a heavy load, for example.

Developers will access the services from a Web browser and be able to provision resources on the Linux, Windows and OpenSolaris operating systems. They'll be able to use a drag and drop interface, or a command line interface and a set of cloud service APIs, said Juan Carlos Soto, vice president of marketing for Sun's cloud division.

These will be the first of several cloud services that Sun plans to announce in the coming months, to create what it calls the Sun Open Cloud Platform. It won't announce the other services Wednesday, nor will it provide pricing or a general availability date for the initial offerings; that information will come in the summer, Soto said.

This will be Sun's second attempt at on-demand computing services. A few years ago it launched the Sun Grid Compute Utility, where companies could "rent" computing cycles on an hourly basis. The service attracted few customers and Sun stopped signing up new ones last year, though it said it will continue to support them for now.