"You should have: 1. A set of metrics that show the business performance of your application (SLIs); 2. A set of targets based on those metrics which show when your application is performing adequately - or not (SLOs); 3. Alerts if the application is not performing adequately and manual intervention is required to get it back on target; 4. Notifications if the application was not performing adequately and automatic intervention got it back on target"