The document discusses the technology basis, vendors, and market analysis of the Extreme Packet Core (EPC). The EPC was introduced in 2009 by 3GPP and features an all-IP architecture with separated control and data planes. Major vendors include Huawei, Cisco, Ericsson, and NSN. Huawei has the largest market share at 41% followed by Ericsson at 23% and NSN at 14%. The market is distributed globally with various vendors dominant in different regions.