Device attestationensures that only corporate-approved devices can perform privileged actions in SaaS applications.Continuous authorizationmonitors ongoing device compliance, dynamically adjusting permissions based onsecurity posture. Blocking connections (A)is too restrictive and does not accommodate BYOD. Machine certificates (B)help with authentication but do not provide continuous security assessment. MDM policies (D)secure mobile devices but do not apply real-time access controls for SaaS applications.