Which tool is designed to serve as a display/UI layer for container monitoring?

Grafana is specifically designed to act as a visualization tool that integrates with various data sources, including those that monitor containerized environments. It excels at providing intuitive dashboards and allows users to create visually appealing charts and graphs from the underlying metrics that tools like Prometheus collect. Grafana facilitates an effective visual representation of data, making it easier to analyze container performance, health, and activity over time. Its capability to connect with multiple data sources enhances its utility, allowing container monitoring data from diverse systems to be displayed cohesively.

In contrast, Amazon Elasticsearch Service focuses on storing and searching large volumes of data but is not primarily a UI for monitoring. Nagios XI is a traditional monitoring tool that may include visual elements but is not specifically tailored to container environments. Prometheus is a powerful monitoring and alerting toolkit designed to collect and store metrics, but it lacks a user-friendly visualization layer on its own, which Grafana provides. Thus, Grafana stands out as the optimal choice for display and user interface for container monitoring.