Explanation

Agents for Amazon Bedrock is the correct answer because:

1. Purpose: Agents for Amazon Bedrock are designed to execute multi-step tasks by orchestrating interactions with various systems and APIs.

2. Functionality: They can:

   • Call external APIs to retrieve real-time data (like flight prices)
   • Perform actions (like booking tickets)
   • Handle complex workflows that require multiple steps
   • Integrate with various data sources and services

3. Comparison with other options:

   • Knowledge Bases for Amazon Bedrock (A): Primarily for retrieving information from company documents and data sources, not for executing API calls or performing actions.
   • Guardrails for Bedrock (C): Focuses on safety, content filtering, and responsible AI, not on executing external API calls.
   • Model Customization (D): Involves fine-tuning foundation models with custom data, not for orchestrating API calls or actions.

4. Use Case Fit: The travel app scenario requires:

   • Real-time data retrieval from external flight APIs
   • Execution of booking actions
   • Multi-step workflow (check prices → book tickets)
   • This perfectly matches the capabilities of Agents for Amazon Bedrock.

Key Takeaway: When you need an AI assistant to perform actions, call APIs, or execute multi-step tasks, Agents for Amazon Bedrock is the appropriate choice.