Telecomunications networks are evolving naturally toward IP-enabled platforms as a replacement for private lines. These converged networks are easier to manage, and should deliver high availability, network security, scalability and Quality of Service (QoS). Three basic IP VPN technologies are used today to create network architectures: Multi Protocol Label Switching (MPLS), IP Security (IPSec) and Secure Socket Layer (SSL). Many companies are using combinations of these VPN technologies to design unique solutions that will meet their business needs. This white paper discusses the strengths and weaknesses of these options so that you can make good choices and design an optimized infrastructure that makes the most of the available technology.