Building an AI agent is only the first step; keeping it reliable, accurate, and cost-effective in production is the real engineering challenge. This session dives deep into the operational realities of Agentic AI. We will step away from basic prompt engineering and focus entirely on the monitoring stack. Using Vertex AI, we will implement practical techniques for evaluating agent performance, logging reasoning paths, and monitoring tool execution in real-time, ensuring your agents do exactly what they were designed to do without unexpected deviations.