Alibaba Cloud Managed Security Service (MSS) is a commercially offered, expert-led security operations service built on the Alibaba Cloud platform. It provides continuous monitoring, threat detection, and security management for cloud environments. The service centralizes security data from multiple Alibaba Cloud security products—including Security Center, Cloud Firewall, WAF, and Anti-DDoS—and applies big data analytics and threat intelligence to deliver actionable insights. MSS offers 24/7 managed security operations with a guaranteed security alert response time of 30 minutes. Key service components include WAF Hosting, Anti-DDoS Proxy Hosting, Cloud Firewall Hosting, Security Center Hosting, and Anti-Bot Hosting. The service also covers end-to-end security operations from perimeter to intranet, vulnerability management, policy configuration, and data security. Additional offerings include a Security Assessment Service (from USD 1,999/incident) that analyzes cloud security posture, risks, and attack surfaces, and an Incident Response Service (from USD 5,000/assessment) that provides expert remote incident response and analysis. The 24/7 managed tier is subscription-based and priced from USD 4,000/month, billed by URL quantity tiers. Expert guidance on cloud security architecture design, professional consulting, security hardening, major event assurance, and training on cloud security products are also included.