A client will ask you how you arrived at a four-hour recovery objective. This is the chain, and it is the
same one every time, which is what makes the answer defensible.
You rateFive impact categories at five durations, against written anchors.
Worst per durationThe highest severity across categories. Impact is never averaged.
MTPDThe last duration at which impact is still tolerable.
RTO and RPOThe next bucket below the MTPD, with headroom, and a data-loss tolerance in plain language.
CriticalityComputed, never typed. There is no cell in which to inflate it.
Article 3(22)The time test or any one of the three criteria, with the rationale written for you.