Volta is an experimental developer toolset for building multi-tier web applications, developed at MicrosoftLive Labs. It allows developers to split their application easily into different client and server parts throughout the development lifecycle. Volta integrates with Microsoft Visual Studio and the .NET Framework, supporting AJAX, JSON and more. It extends the .NET platform to software as a service (SaaS) applications, by using existing and familiar libraries, languages, tools, and techniques.
On September 8, 2008, Microsoft took the project page offline, "while we make a few changes." Despite assurances on the page that "the technology will be available again soon", it has not yet returned. While continuing to make the software publicly unavailable, Microsoft Research has published an academic paper dated November 18, 2008 based on a framework built entirely on top of Volta.