This catalyst addresses fragmented network autonomy by proposing a transformative shift to reliable, holistic autonomy. This is achieved through our innovative approach to AI and Agentic AI that operate on a common data foundation, ensuring autonomy is not anchored solely in network insights but also in impacts on the end-user experience, and reliability driven by agents for real-time actions and to operate at scale. With this, we achieve zero-touch autonomy through a use case-centered approach to bring tangible business value. In this phase, autonomy extends beyond network operations into monetization and service management, including incidents, problems, configuration changes, and closed-loop learning, breaking traditional silos and providing true end-to-end visibility and autonomy. By linking autonomous networks with AI-driven BSS, the Catalyst also accelerates B2B sales for high-value 5G services. Intelligent need identification, automated intent validation, guided deal closure, and MCP-powered AI assistants streamline the entire sales journey while ensuring offerings are technically and commercially optimal. This delivers significant business value through unified decision-making and wider impact analysis across network, business, security, and end-user experience, all built on a common data foundation. End-users will benefit from optimized device experiences and 'zero touch' services. We’ll demonstrate this integrated value by tracking comprehensive business outcomes showcasing the integrated value of autonomy beyond isolated metrics. Phase III introduces key innovations, including cross-layer agent communication, learning from operator know-how, service-aware autonomous workflows, and expanded autonomy across design, delivery, assurance, and change. The result is a scalable, standards-based model, grounded in TM Forum Open APIs, ODA, and intent-based principles, that helps CSPs transition from reactive processes to predictive, customer-centric, and fully autonomous operations. Ultimately, this catalyst provides CSPs with a practical path to holistic autonomy: improving agility, reducing OpEx, boosting B2B sales velocity, enabling Dark NOCs, and continuously refining decisions with full operational context.