In today’s commoditized home broadband market, emerging AI services—cloud gaming, AIGC and embodied intelligence—are driving demand for low latency, high uplink bandwidth, and deterministic experiences. Yet traditional operations remain KPI-centric and reactive, with many experience degradations staying hidden until customers complain, limiting operators' ability to differentiate services and capture value. This Catalyst demonstrates the shift from reactive fault handling to proactive experience assurance. It introduces an experience-centric foundation built on a “Network Element–Network–User” three-layer agent collaboration, executing a “Perceive–Quantify–Assure (PQA)” closed loop driven by an AI-based Customer Experience Index (CEI) model. The CEI (covering 3 layers, 8 dimensions and 40+ KPIs) converts silent degradation into quantifiable experience scores (0–100), enabling proactive optimization before users are impacted. This directly addresses three pain points: the customer experience “black box” and reactive operations, cross-domain silos and low efficiency, and one-size-fits-all policies that prevent differentiated assurance and experience monetization. Built on this architecture, the solution enables four high-value scenarios: 4K cloud gaming assurance, HD live commerce and streaming Guarantee, AI computing fast interconnect, and smart home self-service assistant. The pilot has reached 31 provinces and 50 million users, delivering measurable outcomes: 44.6% Wi Fi throughput improvement under interference, 30%+ peak-hour end-to-end latency reduction, 70%+ gaming frame-rate improvement, and 10%+ complaint reduction. Upon full deployment, it is projected to drive CNY 480 million in new revenue and save CNY 200 million in OpEx. Aligned with TM Forum Autonomous Networks principles and ODA architecture, the solution enables standardized, vendor-agnostic integration with existing OSS/BSS systems for scalable deployment.