Microsoft 365 employs a multi-layered approach to ensure data security. At the infrastructure level, data centers are physically secured and monitored 24/7. Data in transit and at rest is encrypted using industry-standard protocols. Multi-factor authentication and conditional access policies help prevent unauthorized access. Advanced Threat Protection safeguards against malware and phishing attempts. Data Loss Prevention policies prevent sensitive information from leaving the organization. Compliance features help meet various regulatory requirements. Regular security updates are automatically applied to all applications. Microsoft also provides detailed security and compliance documentation, empowering administrators to configure security settings according to their organization's needs. Additionally, Microsoft's transparent approach to privacy ensures that customer data is not used for advertising or other commercial purposes.