Evolution-Data Optimized (EV-DO) is a fast wireless broadband access (3G), where you are the hotspot (meaning you don't need a Wi-Fi hotspot to have the Internet access). Your PC or laptop requires a EVDO PC card for connection. EV-DO supports an "always-on" connection, similar to DSL. EV-DO is the wireless broadband standard that has been adopted by many CDMA mobile phone service providers.
Evolution-Data Optimized (EV-DO), was formerly called Evolution Data Only (EVDO)