This white paper presents Arista AVA, an AI-enabled decision support system designed for network and security operations. It outlines the architecture of AVA, which integrates cloud scalability and real-time data processing capabilities to enhance operational efficiency. The paper details how AVA utilizes a multi-modal data lake to collect and analyze network telemetry, enabling proactive network operations and improved security outcomes. Several case studies illustrate AVA's applications, including proactive notifications for network reachability issues and automated workflows for network access control. The document emphasizes the importance of real-time data and AI-driven insights in optimizing network operations and security measures. Additionally, it discusses the challenges faced by traditional AI models in network environments and how AVA addresses these issues by focusing on normal network behavior to identify anomalies effectively. Overall, the white paper highlights the transformative potential of AI in managing complex network infrastructures.