How do you monitor and secure hybrid cloud applications?

Monitoring and protecting hybrid cloud applications requires an integrated and unified approach:

A hybrid cloud environment integrates public cloud, private cloud, and potentially edge resources. Monitoring serves as the cornerstone for ensuring application performance and availability, while protection is used to defend against cross-environment threats. A unified strategy is crucial for maintaining business continuity and data security.

The core lies in achieving cross-platform visibility, control, and automation. Monitoring needs to aggregate metrics, logs, and tracing data into a central platform (such as Prometheus, Datadog) to provide full-stack observability. Protection relies on a consistent policy framework, combining micro-segmentation (zero trust), strong identity authentication (IAM), end-to-end encryption (in transit/at rest), WAF, intrusion detection, and continuous vulnerability scanning. Cloud Workload Protection Platform (CWPP) and Cloud Security Posture Management (CSPM) tools are key.

Practice involves four steps: First, deploy unified monitoring tools to integrate data sources from various environments; second, implement automated security baselines and enforce encryption; third, use SIEM/SOAR for real-time threat detection and response; fourth, regularly audit configuration compliance. Reduce operational burden and achieve proactive protection through cloud-native security tools (such as k8s policy engine OPA) and managed services (AWS GuardDuty/Azure Defender).