Ephemeral environments are temporary, isolated setups that significantly enhance the software development process by allowing rapid testing and deployment without the need for permanent infrastructure changes. These environments facilitate asynchronous collaboration, are cost-effective, agile, and flexible, providing developers with an efficient means to test and experiment with code while automatically shutting down when no longer needed. Harness offers a streamlined method for setting up such environments, requiring minimal configuration and enabling developers to focus on software development rather than infrastructure management. By utilizing ephemeral environments, teams can increase productivity, reduce operational costs, and improve security and reliability, making them a valuable tool for modern DevOps practices.