Kubernetes has enabled more complex microservice architecture, leading to a gap between the state of dashboards and the health of services for users. To ensure uptime, teams need external tools checking on their systems, such as synthetic monitors like Kuberhealthy and Prometheus Blackbox exporter. While both tools monitor endpoint availability, they serve different purposes: Kuberhealthy focuses on internal Kubernetes health checks, while the Blackbox Exporter is designed for monitoring uptime and connectivity of external services. Choosing between them depends on specific needs and use cases.