In an increasingly interconnected digital ecosystem, traditional reactive approaches to IT incident response are no longer sufficient to ensure business continuity, cybersecurity, and system reliability. This paper explores the evolution of incident response strategies from reactive to proactive models through the use of cross-platform integration, with a focus on sustainable development. By leveraging automation, real-time analytics, and AI-driven monitoring tools, organizations can reduce downtime, prevent system failures, and optimize resource usage. This transformation not only enhances the effectiveness and efficiency of IT operations but also contributes to environmental sustainability by minimizing redundant computational loads and energy consumption. The study highlights implementation strategies, evaluates quantitative outcomes from case studies, and discusses challenges and recommendations for scaling these solutions in enterprise environments. Ultimately, this proactive and integrated approach is positioned as a critical enabler for resilient, adaptive, and sustainable IT infrastructure.