HashiCorp Terraform Associate (004) Question 9
Single answer1a Explain what IaC isA company provisions development cloud environments by following a wiki with manual steps in the cloud console. Over time, teams notice that environments differ from one another, auditing changes is difficult, and rebuilding a failed environment takes hours. The platform team proposes using Terraform to define the environments in configuration files stored in version control and applied through a standard workflow. Which outcome best demonstrates the primary value of Infrastructure as Code (IaC) in this scenario?
- A
It allows the team to create and manage infrastructure through declarative, versioned definitions so environments can be reproduced consistently and changes can be reviewed.
- B
It removes the need for change approval processes because infrastructure changes made with Terraform are inherently safe.
- C
It guarantees that all deployed infrastructure will be cost-optimized because Terraform automatically selects the cheapest resources.
- D
It replaces the need to understand cloud infrastructure because Terraform decides the correct architecture without human input.
Show answer and explanation
Correct answer: A
Explanation
Infrastructure as Code (IaC) means managing and provisioning infrastructure using configuration files rather than manual processes. In Terraform, this is typically done with declarative configuration that describes the desired end state. The key practical benefits in this scenario are consistency, repeatability, versioning, and auditability. By storing Terraform configuration in version control, teams can review changes, track history, and reproduce environments reliably, reducing drift caused by manual console changes. This aligns with Terraform documentation and HashiCorp guidance that emphasize codifying infrastructure, treating it like application code, and using workflows such as plan and apply to safely manage changes.
- A. Correct.
Correct. This is the core idea of IaC: infrastructure is defined in machine-readable configuration files and managed using software development practices such as version control, code review, and repeatable execution. In this scenario, that directly addresses configuration drift, inconsistent environments, and slow rebuilds by making infrastructure reproducible and auditable.
- B. Incorrect.
Incorrect. IaC improves consistency and traceability, but it does not eliminate the need for governance, approvals, or review. In practice, many organizations integrate Terraform into controlled workflows specifically so infrastructure changes can be reviewed and approved before apply.
- C. Incorrect.
Incorrect. Terraform is not a cost-optimization engine and does not automatically choose the cheapest resources. Teams must still design architectures and select resource types intentionally. IaC can help standardize approved patterns, but cost optimization is not guaranteed simply by using Terraform.
- D. Incorrect.
Incorrect. Terraform helps implement infrastructure as code, but it does not replace architectural knowledge. Practitioners still need to understand provider resources, dependencies, security requirements, and design decisions. IaC automates provisioning and management; it does not autonomously design correct systems.