What approach to security calls for security through a variety of defensive techniques that work together?

The approach to security that advocates for using a variety of defensive techniques that work together is known as "defense in depth." This strategy involves layering multiple security measures, such as firewalls, intrusion detection systems, and access controls, to create a comprehensive security posture. By employing diverse defenses, it enhances overall protection and ensures that if one layer fails, others can still mitigate potential threats. This holistic approach aims to address vulnerabilities and reduce the risk of successful attacks.