While it can be argued that not every business needs to be fully operational 100% of the time, for public safety agencies that are in the “business” of serving the public and saving lives, the need to be on 24/7 couldn’t be more true.
If you have even a passing interest in software development, you’re likely familiar with the premise of agile methods and processes: keep the code simple, test often, and deliver functional components as soon as they’re ready.