About This Domain
Domain 3 — Applications of Foundation Models — accounts for 28% of the AIF-C01 certification exam. This domain evaluates your understanding of selecting the right foundation model for a use case, prompt engineering: zero-shot, few-shot, chain-of-thought, retrieval-augmented generation (rag) and knowledge bases, and related concepts. Domain 3 is the largest domain. It covers practical applications of foundation models including RAG, agents, prompt engineering, Amazon Bedrock features, and selecting the right model for a task. To pass this section you need practical knowledge of how these services and patterns work together in real-world architectures.
What You'll Be Tested On
- Selecting the right foundation model for a use case
- Prompt engineering: zero-shot, few-shot, chain-of-thought
- Retrieval-Augmented Generation (RAG) and knowledge bases
- Amazon Bedrock: model access, guardrails, agents, knowledge bases
- Fine-tuning vs prompt engineering vs RAG — when to use each
- Multi-modal models: text, image, code, and audio generation
Key AWS Services in This Domain
Study Strategy for Domain 3
This domain represents 28% of the total exam, making it a significant scoring area. Balance theoretical study with hands-on practice. Use practice quizzes to identify weak spots and review the topics where you score below 75%.
Exam Tips for Domain 3
Understand the trade-offs: prompt engineering (fastest, cheapest), RAG (grounded, current data), fine-tuning (specialized, expensive).
Know Amazon Bedrock features: model playground, knowledge bases, guardrails, agents.
RAG questions appear frequently — understand the full RAG pipeline from embedding to retrieval to generation.
Practice identifying which approach (prompt engineering, RAG, or fine-tuning) fits a given scenario.
Frequently Asked Questions
How many questions on the AIF-C01 exam come from Domain 3?
Domain 3 (Applications of Foundation Models) makes up 28% of the AIF-C01 exam. The exam has 65 scored questions, so approximately 18 questions will come from this domain.
What services should I focus on for Domain 3?
The key services for this domain include Bedrock, Prompt Engineering, RAG, Foundation Models, Guardrails, Amazon Q, Kendra, Generative AI. Make sure you understand how each service works, its use cases, and how they integrate with one another.
How should I prepare for Applications of Foundation Models questions?
Start by reviewing the key topics listed above, then practice with domain-specific questions. Focus on understanding real-world scenarios rather than memorizing facts. Use our practice quizzes to test your knowledge and review explanations for any questions you get wrong.
What's the best order to study the AIF-C01 domains?
Many candidates start with the highest-weighted domains first. For the AIF-C01 exam, the domains in order of weight are: Fundamentals of AI and ML (20%), Fundamentals of Generative AI (24%), Applications of Foundation Models (28%), Guidelines for Responsible AI (14%), Security, Compliance, and Governance for AI Solutions (14%). However, start with whichever domain aligns best with your existing experience.
Practice Domain 3 Questions
Test your knowledge of Applications of Foundation Models with practice questions from our AIF-C01 question bank.
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