The Recovery Time Objective (RTO) value represents the maximum recovery timeframe from an outage. Thus, it is an important indicator of the service level. For example, if we add the RTO and the RPO (Recovery Point Objective), we should get a time value which specifies the period from the last data backup before the outage to full recovery.
The concept of RTO is also used in business continuity planning. It is also closely related to the question: “How long can a given service be down to still have acceptable consequences of an outage?”. Once managers find the answer to this question, the technical design that will guarantee the RTO comes into play. Generally, the lower the RTO, the better but more expensive the technical solution.