CLF-C02 Cloud Concepts Practice Question
A company is adopting the cloud and wants to improve operational efficiency by treating their infrastructure as code. Which AWS service allows them to define and provision AWS infrastructure using JSON or YAML templates?
⚠ Common exam trap
Many exam-takers confuse AWS CloudFormation with AWS OpsWorks or AWS Systems Manager, as both can manage infrastructure but use different paradigms (declarative templates vs. configuration management) and are not designed for JSON/YAML-based infrastructure provisioning.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS CloudFormation
AWS CloudFormation is the correct service because it allows you to define and provision AWS infrastructure as code using JSON or YAML templates. This enables repeatable, version-controlled deployments, directly supporting the goal of improving operational efficiency through infrastructure as code.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Systems Manager
Why it's wrong here
AWS Systems Manager is an operations and management service for viewing and controlling infrastructure at runtime. It offers capabilities such as Patch Manager, Run Command, and Parameter Store to automate operational tasks like patching and executing scripts, but it does not use declarative templates to provision, update, and delete an entire collection of AWS resources. Therefore, it is not an infrastructure-as-code templating service, so it does not fit the use case described in the question.
- ✓
AWS CloudFormation
Why this is correct
AWS CloudFormation is the native infrastructure-as-code service that lets you define every AWS resource in a declarative JSON or YAML template. CloudFormation treats those templates as a single stack, automatically handling dependency ordering, rollback on failure, and updates, which makes resource provisioning consistent and repeatable across environments. Because the question asks for a service that provisions infrastructure stacks in this way, CloudFormation is the correct choice.
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AWS OpsWorks
Why it's wrong here
AWS OpsWorks is a configuration management service based on Chef and Puppet that primarily automates the configuration, deployment, and lifecycle of applications on EC2 instances. While it can help manage server state through recipes and cookbooks, it is not a generic templating engine for declaring all AWS resources, and its model is centered on instances rather than a broad stack of infrastructure. That makes it wrong for this scenario.
- ✗
AWS Config
Why it's wrong here
AWS Config is a compliance and audit service that records the configuration history of your resources and evaluates them against desired rules. It can detect drift and show whether a resource complies with policies, but it has no provisioning or templating engine, so it never creates, modifies, or deletes resources. Because the question asks about an infrastructure-as-code service that builds stacks, Config is incorrect.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CLF-C02 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 CLF-C02 exam.