Authoritative DNS is a must for any organization hosting web services for remote employees, subscribers or application users. Here are a couple of tips to ensure your network resources are always available:
- Have redundant ISP links (because any given ISP will suffer outages)
- Utilize a device (like Ecessa SD-WAN) to handle external DNS requests and direct them to an active link
For an explanation of how authoritative DNS works to keep your apps and data always available, please take the time to watch this short video.