Verizon's IP VPN services, led by flagship Private IP and Secure Gateway Services, cater to enterprise-class customers on a domestic and global scale. Verizon increases its hold with IP VPNs as traditional frame relay and ATM services decline. This report contains insight and analysis of the product or service strengths and weaknesses, list of buying criteria and how the product or service fares in each category, and a comprehensive table of product or service metrics and specifications. This report is useful for purchasers who need to evaluate products, or as a source of competitive intelligence for vendors.