Secure data center, multiple layers of defense, network segregation, demilitarized zone (DMZ), intrusion detection system (IDS), firewall, access control list (ACL), encryption, virtual private network (VPN), secure sockets layer (SSL), transport layer security (TLS), public key infrastructure (PKI), identity and access management (IAM), cloud security architecture, hybrid cloud model, zero-trust model, defense in depth strategy, confidentiality, integrity, availability (CIA) triad, advanced threat protection, anomaly detection, incident response plan, chief information security officer (CISO), security operations center (SOC), monitoring, logging, alerting, risk management framework, compliance, governance, ISO 27001 standard, NIST cybersecurity framework, MITRE ATT&CK matrix, OWASP top 10 web application security risks.