But background tasks are a thing. You could add a webhook endpoint to your monolith that writes a background job. Then your background worker (running on the sa

But background tasks are a thing. You could add a webhook endpoint to your monolith that writes a background job. Then your background worker (running on the same ec2 because it’s hardware requirements look pretty low at $2 a month in lambda) runs the job. $2 a month is now $0 since it’s running next to your monolith on the VM you’re already paying for.