The Catalyst demonstrates an Agentic AI-driven, intent-to-operate framework that unifies service activation and network change management into a single autonomous lifecycle aligned with TM Forum ODA and Autonomous Networks Level 4, with a clear evolution path to Level 5. CSPs and large enterprises manage increasingly complex hybrid networks spanning multiple domains like SD-WAN, LAN, transport etc... Service activation and network change are still treated as separate, manual, and technology-specific processes involving multiple teams, scripts, and vendor tools. This results in slow delivery, inconsistent policy enforcement, elevated operational risk, increasing cost and limited progress toward Autonomous Networks Level 4 and beyond. ""Activation is just the first change in a service lifecycle" As customers increasingly request changes directly and service volumes grow by 30–50%, CSPs require a single, trusted, policy-governed, autonomous lifecycle that can safely activate, modify, optimize, and assure services across multi-vendor environments. Enterprise customers, operations teams, or external systems submit service or change requests in natural language or via APIs. These intents are ingested through TMF921 Intent Management, where Agentic AI interprets, negotiates, and decomposes them into standardized service, resource, and policy intents. The policy-first approach for change management ensures that only compliant, low-risk configurations are approved for execution. In activation, it enables vendor agnostic activation leveraging standard network templates like OpenConfig / IETF YANG, enabling consistent, repeatable, and auditable activation across multi‑vendor, multi-domain hybrid environments Using TM Forum Open APIs, the system orchestrates zero-touch activation and change execution across multi-vendor infrastructure. TMF921 - Intent capture and normalization TMF640 – Service Activation & Configuration to execute service-level activations and modifications TMF702 / TMF664 – Resource Activation & Resource Function Activation for domain-level and network-element changes TMF655 - Change management Continuous telemetry, KPI validation, and AI-driven anomaly detection enable closed-loop assurance, with automated remediation or rollback when deviations are detected, reducing service risk, improving SLA compliance, reinforces trust in autonomous activation and change operations. By unifying intent management, policy-first activation, autonomous change execution, and closed-loop assurance, the Catalyst enables CSPs to safely scale customer-initiated changes, reduce operational effort, and deliver hybrid network services at cloud speed—providing a practical and repeatable path toward Level 4 and Level 5 autonomous operations