Pervasive computing is rapidly emerging as the dominant nomadic computing paradigm. User experience in the pervasive computing environment is strongly dependent on all layers of the network stack, from the application layer down to the physical layer. Wireless networks are key enablers of pervasive computing. The successful implementation of the MicrosoftÆ .NET strategy depends in part on ubiquitous and pervasive public networking solutions, which will serve to enable new applications and services. To support ubiquitous and pervasive networking solutions that consumer electronics, consumer electronic devices, and appliances can plug into, Microsoft is working on a range of wireless technologies to enable a robust set of user scenarios for local area networks (LANs), Personal Area Networks (PANs), and Wide Area Networks (WANs). The next version of the Windows 2000 operating system, code-named "Whistler," builds on the Windows 2000 security, networking, and Plug and Play capabilities with new support. Microsoft is working to ensure that Windows-based PCs will work with all devices with Bluetooth wireless technology. Microsoft plans to deliver an extensible architecture with the following initial support based on the Version 1.1 specification: Device configuration (discovery and bonding), File transfer via OBEX (Object Exchange Protocol), including files, pictures, vcards, Dial Up Networking, Cellular phone as fax/modem, Null modem for peer-to-peer and LAN access and APIs to enable value-add by third-party applications.