Harness Cloud Cost Management (CCM) facilitates efficient cloud migrations and operations by enabling organizations to estimate, track, and optimize cloud costs during Proof of Concepts (PoCs). A cloud PoC serves as a test to demonstrate the feasibility of using cloud computing to solve specific business or technical challenges and aids in evaluating potential cloud providers and services. Selecting a suitable application for a PoC is crucial, as it should represent real-world workloads, be complex enough to challenge the cloud environment, yet manageable for testing. For those new to cloud computing, starting involves choosing a cloud provider, creating an account, deploying the PoC application, and evaluating its performance. Harness CCM supports PoCs by providing visibility into spending, cost-saving recommendations, and automated optimization measures, which can include right-sizing resources and leveraging reserved instances. A practical example is a company conducting a cloud PoC for a machine learning application, using Harness CCM to estimate costs, track spending, and identify savings, ultimately helping them decide on migrating their workload to the cloud.