Wi-Fi

Wi-Fi allows LANs to be deployed without cabling for client devices, typically reducing the costs of network deployment and expansion. Spaces where cables cannot be run, such as outdoor areas and historical buildings, can host wireless LANs. Another popular use for Wi-Fi is to connect buildings or campuses to existing "wired" networks.

As of 2007 wireless network adapters are built into most modern laptops. Getting a laptop without a built in Wi-Fi has now become an exception. Wi-Fi chipset pricing continues to come down, making Wi-Fi a very economical networking option and driving inclusion of Wi-Fi in an ever-widening array of devices. Wi-Fi products are widely available in the market.

Different competitive brands of access points and client network interfaces are inter-operable at a basic level of service. Products designated as "Wi-Fi Certified" by the Wi-Fi Alliance are backwards inter-operable. Wi-Fi is a global set of standards.

Widely available in more than 250,000 public hot spots and tens of millions of homes and corporate and university campuses worldwide, as of 2007, Wi-Fi has become the preferred method of network connectivity. New protocols for Quality of Service (WMM) and power saving mechanisms (WMM Power Save) make Wi-Fi even more suitable for latency-sensitive applications (such as voice and video) and small form-factor.