About 21Vianet Group (adapted from 21Vianet Group prospectus):
Vianet is the largest carrier-neutral Internet data center services provider in China as measured by revenues in 2009, according to data released by International Data Corporation, or IDC, a third-party research firm. Vianet hosts their customers' servers and networking equipment and provide interconnectivity to improve the performance, availability and security of their Internet infrastructure. Vianet also provides managed network services to enable customers to deliver data across the Internet in a faster and more reliable manner through their extensive data transmission network and their proprietary BroadEx smart routing technology.
The Vianet infrastructure consists of 47 data centers located in 33 cities throughout China, including all of China's major Internet hubs, with over 5,700 cabinets under management housing over 39,000 servers. Vianet's data transmission network includes more than 260 points of presence, or POPs. A POP refers to an access point from one place to the rest of the Internet. Most of their data centers and all of their POPs are connected by private optical fibers network across China.
As a carrier-neutral Internet infrastructure services provider, Vianet infrastructure is interconnected with the networks operated by all of China's telecommunications carriers, major non-carriers and local Internet service providers, or ISPs. This interconnectivity enables each of Vianet's data centers to function as a network access point for their customers' data traffic and connect all the Internet access providers together. In addition, their proprietary BroadEx smart routing technology allows them to automatically select an optimized route to direct their customers' data traffic to ensure fast and reliable data transmission. They claim, "We believe this high-level interconnectivity within and beyond their network distinguishes us from their competitors and provides an effective solution to address their customers’ needs that arise from inadequate network interconnectivity in China."
As of December 31, 2010, Vianet had more than 1,300 customers, including many leading Chinese and global companies including Internet companies, government entities, blue-chip enterprises to small to mid-sized enterprises. Their average monthly churn rate, or customer attrition rate, as measured by monthly recurring revenues was approximately 0.9% in 2010.
This description is adapted from 21Vianet Group prospectus. This description is not intended to be a recommendation to buy stock from this company. We do not claim that all of the statements above were researched and found to be true. We present them as a general description based on what the company has said about itself at the time that they submitted their prospectus for an IPO offering. To see the company's full description, view their prospectus.. 
