May 12 is globally recognized as Anti-Ransomware Day, marking the WannaCry outbreak in 2017 and raising awareness about ransomware threats.Ransomware evolved with Ransomware-as-a-Service (RaaS), offering toolkits and support to affiliates, leading to a billion-dollar criminal enterprise.The article traces RaaS evolution from early platforms like TOX and affiliate models to more aggressive attacks by Petya and Mischa.Cerber, a large-scale RaaS operation, showcased the global reach and revenue models of affiliates, shaping future RaaS strategies.RaaS groups experiment with revenue splits, incentives, and private models to maintain operations and filter out security threats.Branding, leak sites, and social media have become crucial in RaaS strategies to attract affiliates and pressure victims to pay ransom.SentinelOne's Singularity Platform offers AI-driven threat detection and ransomware rollback to protect customers from ransomware attacks.In ten years, RaaS has grown into a mature industry, posing a significant threat that requires early detection and vigilance from defenders.Global law enforcement advises against paying ransoms and encourages cyber resilience efforts to combat the persisting ransomware threat.Awareness, preparedness, and vigilance are key defenses against ransomware attacks on Anti-Ransomware Day and beyond.