Uptime monitoring service active; monitors public endpoint at least every 5 minutes; alerts on downtime

Without uptime monitoring, you learn about production outages from users, not from alerts. A 5-minute monitoring interval is the operational threshold between acceptable detection time and prolonged silent downtime. SOC 2 A1.1 requires availability controls; NIST SI-4 requires system monitoring. ISO 25010 reliability.availability cannot be demonstrated without instrumentation. An undetected 2-hour outage during off-hours can erase a week of user trust — monitoring configured to alert in under 5 minutes limits exposure to minutes, not hours.

Set up Uptime Robot (free tier supports 5-minute intervals) or Datadog Synthetics for your production endpoint.

For Uptime Robot: sign up at uptimerobot.com, create a monitor for https://your-app.com, set the interval to 5 minutes, and add a Slack webhook or email alert channel. Document the monitoring dashboard URL in DEPLOYMENT.md.

For Datadog:

# Datadog synthetic monitor (configured via UI or Terraform)
resource "datadog_synthetics_test" "uptime" {
  name    = "Production uptime"
  type    = "api"
  subtype = "http"
  request_definition {
    method = "GET"
    url    = "https://your-app.com/api/health"
  }
  locations = ["aws:us-east-1"]
  options_list {
    tick_every = 300  # 5 minutes
  }
}

Alert to a Slack channel tied to your on-call rotation.