Answer: 90th percentile - 160 ms 95th percentile - 300 ms

When defining Service Level Objectives (SLOs) for a high-traffic web application, it's crucial to set realistic and achievable targets based on current performance metrics to ensure customer satisfaction. Given that customers are currently happy with the application's performance and availability, and the current measurements show the 90th percentile of latency at 160 ms and the 95th percentile at 300 ms over a 28-day window, the SLOs should reflect these current performance levels. Setting SLOs tighter than the current performance (Option A) might lead to unnecessary pressure and potential failure to meet the SLOs. Setting them significantly higher (Options C and D) could degrade the perceived quality of service. Therefore, the most appropriate SLOs to publish are those that match the current performance metrics, ensuring they are both achievable and reflective of the current customer satisfaction levels.

Author: LeetQuiz Editorial Team