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My recollection is that the design team adopted a principle, that is in their findings, "IANA’s online systems operate 24hours a day, 365 days a year, except for maintenance periods, as befits a service that has customers around the globe" and the expectation that the SLAs are applied regardless of time or date flowed from that. Another assumption that was put forth was what was being measured would mostly be automated after the transition (i.e. that NTIA was a main roadblock, and that was going away). I think that drove the way they were constructed of the SLAs pertain to how quickly automated systems operate, and that speed should not depend on the time of day or day of week.
Of course, this approach doesn't quite reconcile with the fact some of the SLAs pertain to business processes that are manually conducted by our staff, who operate on normal business hours (with the exception of emergencies). I don't recall the specific discussion around this topic, but I think the actual SLA values kind of baked-in that assumption (e.g. the 3 day SLA provides room to meet the SLA even if a request arrived on a weekend).
Generally, I would observe that the design team was very small, and the bulk of the actual SLA design was actually done in a private subgroup comprised of Bernie, myself and Adam Smith, who was one of Paul Kane's employees. I personally wouldn't lean too heavily on discussions the Design Team had, I think the CSC over the past years has spent orders of magnitude more time considering these issues and has more familiarity with the practical application of the SLAs.
that makes sense
Wednesday, 14 April 2021 at 14:00 UTC for 90 mins