Considering a cloud-native application, what aspect of cloud-based automation testing is critical for its effective testing?

In cloud-native applications, the critical aspect for effective testing in cloud-based automation is scalability and elasticity. Cloud environments should be able to scale resources dynamically to handle varying workloads, ensuring that the testing infrastructure can adapt to changing demands. Scalability is essential for executing tests concurrently, maintaining performance, and accommodating the dynamic nature of cloud-native applications.