The integration between Arize AI and Amazon Bedrock Agents provides developers with powerful capabilities for tracing, evaluating, and monitoring AI agent applications. This technical guide explores the newly announced integration, which delivers comprehensive traceability, systematic evaluation frameworks, and data-driven optimization tools to build more reliable, transparent, and high-performing AI agents. The integration is based on Arize's open-source platform, Phoenix, which can be self-hosted or used in conjunction with AWS. With this integration, developers can gain visibility into every step of their agent's execution path, apply consistent evaluation methodologies, run structured experiments to compare different agent configurations, and optimize their agent's performance using data-driven optimization tools.