Case Study: Tesco Delivers Worldclass Online Experiences To Customers Globally After Migrating To NeuStar's UltraDNS Managed DNS Service

In 2008, Tesco was facing the very complicated challenge of migrating their primary data center to a new facility. According to Jon Higgins, Chief Technology Officer, "this looked like an huge challenge, and we had to maintain our online service availability at 100%." Tesco originally thought this would take several months to accomplish and knew that there was a significant risk of downtime to customers.

In addition to the primary challenge of managing the migration of their data center efficiently and without downtime, Tesco was finding it increasingly difficult to manage their external DNS in-house. Their growth was demanding the implementation of many more name servers and an increase of labor to support the existing solution. Paul Ellis, Network Manager of tesco.com, said that Tesco "had quite an aging platform for DNS. DNS was becoming more and more important and we had the option of upgrading all the DNS platforms, but that would not have given us the guaranteed uptime we required." The UK data centers not only support customer facing websites but also corporate email for their offices around the world. With their old, in-house solution, "all lookups from countries like India would go to the UK and back. This created large delays in resolution time."

Jon Higgins and Paul Ellis identified the reasons why Tesco decided to outsource DNS to NeuStar's UltraDNS Managed DNS Service:

• A solution to seamlessly manage the data center migration
• Five 9's SLA - 99.999% guaranteed uptime
• Global infrastructure that would support their operations around the world in a
• cost-effective way
• DNS performance in terms of reduced resolution times and latency
• Scalability to easily support the launch of new services and increased transaction volumes