Microsoft Azure Fundamentals AZ-900 Practice Question

The defense-in-depth model involves implementing multiple layers of security controls throughout an IT system. Its purpose is to provide redundancy in case one security control fails or is circumvented, ensuring that other controls continue to protect the system. This layered approach addresses security at various levels, such as physical infrastructure, identity management, network security, application security, and data protection.

While encrypting data, securing user identities, and maintaining firewalls are important, they are individual components of the broader defense-in-depth strategy.