Defense-in-depth is most appropriately defined as part of an organization's security architecture. Smaller to mid-size organizations may not have the resources to develop fully an information assurance architecture and will therefore often rely on risk assessments to help find weaknesses in their security posture. The security architecture of an organization must develop defenses for every level of an application, system, or workflow using physical, logical, and technical countermeasures to slow the attack of an adversary. To slow the attackers, defenders must present numerous challenges through various dimensions of countermeasures.

Do research on use cases related to Defense-in-depth information assurance and explain how Defense-in-depth provides Website security and Network security