フリー問題

問題文

For the order API the team writes three statements. First: the proportion of checkouts completing in under 300 milliseconds. Second: that proportion must be at least 99 percent over each 28-day window. Third: if it falls below 99 percent, affected merchants receive a fee credit. Which option correctly identifies what each statement is?

選択肢

1. All three are objectives at different levels of aggregation, since each one states a numeric target and a window for the same underlying measurement.
2. The first is the indicator, and the second and third are both agreements, because any numeric commitment published to customers is contractual in nature.
3. The first is the service level indicator, the second is the service level objective, and the third is the service level agreement.
4. The first is the objective, the second is the agreement, and the third is the indicator, because the indicator is what the customer ultimately experiences.