Agent-to-agent collaboration: Using Amazon Nova 2 Lite and Amazon Nova Act for multi-agent systems

This article demonstrates how to build multi-agent systems using Amazon Nova models for complex workflows like travel planning, replacing fragile single-agent designs with specialized agents that collaborate through message passing.

• Single agents struggle with mixed tasks; splitting work across specialized agents improves reliability
• Travel Agent (Nova 2 Lite) orchestrates workflow and routes messages between specialized agents
• Flight Agent (Nova 2 Lite) handles structured API calls for predictable flight data retrieval
• Hotel Agent (Nova Act) automates browser interactions for dynamic hotel website navigation
• Agents communicate via lightweight agent-to-agent (A2A) message passing with JSON payloads
• Each agent focuses on one responsibility, reducing hallucinations and improving consistency
• Full implementation code available in AWS GitHub repository

Multi-agent collaboration with specialized models provides a scalable, maintainable approach to complex tasks by separating concerns and enabling clear communication between focused agents.