PacketCloud is a virtualization solution that enables network operators to fully exploit the potential of 5G networks and edge clouds. PacketCloud is both secure and lightwieght: it allows running thousands of applications, each inside its own VM, on thin servers inside the ISP network while ensuring strong security and isolation. It is based on the results of 5 years of lightweight virtualization research in the NetSys lab at University Politehnica of Bucharest.