mark summary: Google Cloud Run is a fully managed platform that enables developers to deploy and scale container-based serverless workloads. It abstracts away infrastructure management, providing an easy-to-use interface for deploying and managing applications without worrying about underlying infrastructure. To ensure optimal performance and cost-effectiveness, it's essential to monitor key metrics such as CPU utilization, memory allocation time, request count, request latency, billable instance time, and running job executions count, among others. These metrics provide insights into resource usage, concurrency, and scaling behavior, enabling developers to make data-driven decisions to optimize their applications' performance and costs.