One particular use case applying to this question is that we have some resources in AWS EC2 and Google Cloud Compute with a cron job to do a nightly disk snapshot.
Is there a way to use Stackdriver to monitor the snapshot is invoked and send an alert if it doesn't?
Basically this would operate like a heartbeat, but it's only sent every 24 hours.
I think one method is to use something like "metric absence" but I don't think CloudWatch nor Stackdriver can do something like a window greater than 24 hours.
Other use cases would be any other cron job we want to monitor that are application specific, like import jobs or batch jobs.
I know there's other services that can handle this like Cronitor or OpsGenie's Heartbeats but I'm looking for a method within the same environment without additional costs.