Alerts tend to take a long time to arrive – PagerDuty Review

Alerts seem to take at least a minute to arrive sometimes two minutes. This means that I can't rely on the app for alerts, but I must also add contact me by phone to my alerts, so I can ack in les than 90 seconds. If the alerts don't need responded to right away, but just in the next few minutes it's probably fine. But, for sub one minute alerting you need to keep looking
Review by SF techie on PagerDuty.