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Infrastructure as Code (IaC)

Infrastructure as Code (IaC) is the practice of defining and managing cloud infrastructure through version-controlled configuration files rather than manual processes or interactive tools.

How It Works

With IaC, engineers write declarative or imperative configuration files that describe the desired state of cloud resources. Tools like Terraform (multi-cloud), AWS CloudFormation, Azure Bicep, and Google Cloud Deployment Manager read those files and provision or update resources accordingly. Because infrastructure definitions live in source code, they go through the same review, testing, and deployment workflows as application code. Any change to a resource, whether a resize, a new service, or a decommission, is tracked in version history and can be rolled back. Also learn about Cloud Cost Governance Framework.

Why It Matters for Cloud Cost

Untracked manual provisioning is one of the most common sources of cloud waste. When engineers spin up resources by clicking through a console, those resources often lack cost tags, get forgotten, or persist long after they are needed. IaC enforces consistency at the point of creation. Cost tags, naming conventions, and resource policies can be embedded directly in templates, so every resource that gets deployed meets governance requirements from day one. IaC also makes cost estimation possible before resources are provisioned. Tools like Infracost integrate directly into Terraform workflows and surface estimated monthly costs during code review, letting teams catch expensive configurations before they reach production.

ClearCost provides visibility and showback reporting across your cloud environment, so teams can see what their deployed infrastructure is actually spending.

See how Usage AI saves 30 to 50% on AWS, GCP, and Azure.

Related Terms

Instance Flexibility

Instance flexibility is a Reserved Instance feature that allows a discount to apply across different sizes within the same instance family and region, rather than locking the discount to a single, fixed instance type.

Idle Cloud Resources

Idle cloud resources are provisioned cloud services that continue generating charges while delivering no active business value due to low or zero utilization.

Insured Commitment

An Insured Commitment is a cloud discount commitment owned and managed by a third party, so the customer receives the savings without carrying any financial risk from underutilization.