Microsoft Corp. is building new Web-services middleware meant to take the Microsoft .Net platform to the next level. But the crux of that services infrastructure, code-named Indigo, is still two years away from delivery. Indigo, according to sources recently briefed by Microsoft, is the middleware that will pro-vide some of the high-availability, distributed features that users and businesses will require in or-der to make Web services truly ubiquitous. Microsoft is laboring to make its first software developer release of Indigo available to key partners by the third week of October, around the time of its annual Professional Developers Con-ference in Los Angeles, sources said. Microsoft is planning to build Indigo into a future version of Windows, possibly the release code-named Longhorn, by the spring of 2003, said sources.
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