This document provides an overview of Virtual Private LAN Service (VPLS) and the emergence of Metro Ethernet services. It discusses how Metro Ethernet has evolved from legacy networks utilizing technologies like SONET/SDH and ATM to new optical Ethernet and MPLS-based services. VPLS allows enterprises to connect multiple LAN sites over a shared infrastructure using Ethernet interfaces while maintaining privacy and security. The document also examines trends in residential broadband access and IP/broadcast convergence using Metro Ethernet.