Quick Answer
The answer is Amazon Bedrock, which is the correct choice because it provides a fully managed, serverless API for accessing foundation models from leading AI providers like Anthropic, Meta, and Stability AI, charging only per token processed rather than requiring any infrastructure provisioning or capacity planning. This serverless architecture means you can invoke models such as Claude or Llama through a simple API call without managing servers, scaling, or upfront commitments, making it ideal for variable or unpredictable workloads. On the AWS Certified AI Practitioner AIF-C01 exam, this question tests your understanding of how Bedrock differs from services like SageMaker (which requires managed instances) or Lambda (which runs custom code, not pre-built foundation models). A common trap is confusing Bedrock with Amazon Q or Amazon Lex, but remember that Bedrock is the only service offering direct, serverless access to third-party foundation models with pay-per-token pricing. Memory tip: think "Bedrock = Base + Rock" — it provides the foundational bedrock for AI models without any server overhead.
This AIF-C01 practice question tests your understanding of applications of foundation models. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which AWS service provides a serverless API for accessing foundation models with per-token pricing?
Amazon Bedrock
Bedrock provides a serverless API with per-token pricing.
Amazon API Gateway
Why wrong: API Gateway creates APIs but does not host models.
AWS Lambda
Why wrong: Lambda is compute, not a model inference service.
Amazon SageMaker
Why wrong: SageMaker endpoints are instance-based, not serverless per-token.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon Bedrock
Amazon Bedrock is the managed service that offers a serverless API for foundation models, charging per token.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon Bedrock
Why this is correct
Bedrock provides a serverless API with per-token pricing.
Related concept
Read the scenario before looking for a memorised answer.
Amazon API Gateway
Why it's wrong here
API Gateway creates APIs but does not host models.
AWS Lambda
Why it's wrong here
Lambda is compute, not a model inference service.
Amazon SageMaker
Why it's wrong here
SageMaker endpoints are instance-based, not serverless per-token.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Identify which AIF-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Applications of Foundation Models — This question tests Applications of Foundation Models — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon Bedrock — Amazon Bedrock is the managed service that offers a serverless API for foundation models, charging per token.
Identify which AIF-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 23, 2026
This AIF-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AIF-C01 exam.
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