# Events, Incidents, Alerts, & Notifications ## Incidents ### [[Postmortem]] ### [[Disaster Recovery]] ### [[Incident Severity Levels (p1-5 & Sev-1-5)]] ## Events ## Alerts ## Notifications ## Downtime [Downtimes](https://docs.datadoghq.com/monitors/notify/downtimes/?tab=bymonitorname) ## Firefighting ## On call - Some advocate that developers need to be on call for the service they own ## Tools - [[PagerDuty]] - [[Twilio]] - [[Pingdom]] - [[Better Stack]] - [[SNS]] - [[Email]] - [[ntfy]] - [[ntf]] - [[Apprise]] - [[Pushover]]