Explanation

Agents for Amazon Bedrock is the correct answer because:

1. Purpose: Agents for Amazon Bedrock are designed to perform multi-step tasks by orchestrating interactions with foundation models and external systems.

2. API Integration: Agents can connect to external APIs to retrieve real-time data (like live flight prices) and perform actions (like booking tickets).

3. Task Orchestration: They can break down complex tasks into sequential steps - first checking prices, then making bookings, handling user authentication, etc.

4. Other options analysis:

   • Knowledge Bases for Amazon Bedrock: Used for RAG (Retrieval Augmented Generation) to query internal knowledge bases, not for API integration.
   • Guardrails for Bedrock: Focuses on content safety and filtering inappropriate content.
   • Model Customization: Used for fine-tuning models with specific data, not for API integration.

5. Use Case Fit: The travel app scenario requires dynamic interaction with external flight booking systems, which is exactly what Agents for Amazon Bedrock are designed to handle.