EDGE technology is an extended version of GSM. It allows the clear and fast transmission of data and information. EDGE is also termed as IMT-SC or single carrier. EDGE technology was invented and introduced by Cingular, which is now known as AT& T. EDGE is radio technology and is a part of third generation technologies. EDGE technology is preferred over GSM due to its flexibility to carry packet switch data and circuit switch data.EDGE takes GSM even further. GSM, which stands for Global System for Mobile communications, reigns as the world’s most widely used cell phone technology. EDGE, which stands for Enhanced Data rates for GSM Evolution, is a faster version of GSM. EDGE is a high-speed 3G technology that was built upon the GSM standard.