Your time will be well spent in reading this book if the following is true:
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You are responsible for at least one mission-critical domain that must be online 24x7x365, or you are part of a team that manages large groups of domains, in the hundreds, thousands, or above, on behalf of your company or on behalf of your downstream users.
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Your responsibilities include maintaining your organization's core DNS or DNS for its downstream users or clients, even if you accomplish these tasks by outsourcing DNS management to external providers. (This can include sysadmins, webmasters, IT consultants, and developers.)
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You work for a technology company, or you are in tech, your core competency is something other than domains and DNS, but you or your company relies on functioning domains to carry on your business (which is almost everybody these days).
Here's a basic acid test: If your company's or perhaps one of your client's key domain names went offline for any reason, would you be one of the people who will be paged after hours, woken up in the middle of the night, grilled, yelled at, or possibly fired afterward? If the answer is "yes" or "maybe", this book is for you.
