This is enormously faster than conventional DRAM memory and is targeted initially for network switching application as well as high performance computing.

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But he's also in the process of switching over 68 application servers from NT to Unix.

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The new software works by suspending Skype's activity on an Windows 8 device within a minute of the user switching to another application.

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E-mails, text messages, photographs and other files relating to a particular person can all be accessed quickly through the phone's contact list, without switching laboriously from one application to another.

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It services hundreds of global firms, including Goldman Sachs, Visa and DHL. Infosys has developed switching software for Cisco, a factory management system for Nestl and an inventory tracking application for Nordstrom.

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Software-defined networks will provide some of this flexibility by separating the control function from data forwarding, but there are additional capabilities emerging, he says, such as intelligent switching of wavelengths, the ability to mix dedicated bandwidth with best-efforts networks, and application layer network traffic optimization, e.g.

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