What kind of testing evaluates the resilience of Cloud RAN?

Stress and load testing are crucial for evaluating the resilience of Cloud RAN because they specifically focus on how the system performs under extreme conditions and heavy usage. These tests assess the system's ability to handle high traffic volumes and maintain performance during peak loads, which is essential for ensuring that the Cloud RAN can provide reliable service in real-world scenarios.

In contrast, unit testing primarily checks the functionality of individual components in isolation, and integration testing evaluates how different components work together, but does not necessarily focus on performance under stress. Regressive testing, often intended to ensure that new changes do not adversely affect existing functionality, also doesn't specifically address resilience under load. Hence, stress and load testing are the most relevant methods to comprehensively assess Cloud RAN's resilience.