Domain Name System (DNS) is your business gateway to customers, suppliers, partners and prospects. If your website and other online assets become unavailable, so does your business. Many organizations have turned to an externally sourced, managed DNS service, and increasingly are adding a secondary DNS strategy. The importance of DNS, and its associated benefits, are driving the popularity of implementing managed DNS services. Neustar’s UltraDNS benefits include: a 100% uptime guarantee; built-in security features such as DDoS protection, DNSSEC management, and Nameserver segmentation.”]
Source: https://www.csoonline.com/article/3209286/when-downtime-is-not-an-option.html