IRUAV APP (Smart Solar O&M SaaS Platform) is a cloud-based platform designed to support intelligent operation and maintenance (O&M) of solar photovoltaic (PV) systems. The platform integrates drone thermal inspections, AI-powered defect analysis, expert verification, and cloud-based visualization into a single digital workflow, enabling solar asset owners and operators to manage PV plants more efficiently and transparently. Using drones equipped with infrared thermal cameras, IRUAV APP enables rapid and large-scale inspections of solar power plants. The captured thermal images are processed through AI algorithms that automatically detect potential thermal anomalies and performance-related issues. To ensure high reliability, the AI analysis results are further reviewed by experienced PV inspection experts, providing accurate defect classification and professional maintenance recommendations. All inspection results are integrated into a cloud-based visual management system. Users can easily view orthophoto maps, locate defect positions, review thermal images, download inspection reports, and record maintenance activities through an intuitive web interface. The system supports multi-site management and allows stakeholders to track asset conditions and maintenance history in a transparent and traceable manner. IRUAV APP follows international best practices for solar PV inspection, referencing standards such as IEC 62446-3 for infrared thermography of PV systems. By conducting regular inspections and timely maintenance, solar operators can reduce operational risks and improve power generation performance. Well-maintained solar plants may achieve an annual energy yield improvement of approximately 1–3%, while older plants that have not been inspected for years may see improvements of 3–5% after corrective actions. As the solar industry shifts from construction-focused development to long-term asset management, IRUAV APP provides a data-driven Smart Solar O&M solution that enhances reliability, improves operational efficiency, and supports transparent ESG-oriented solar asset management.