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Posted on Edited on Originally published at spacelift.io

AWS CDK or Terraform

AWS CDK and Terraform can both provision AWS infrastructure, but they represent two different ways of thinking about IaC.

CDK is a code-first approach (real programming languages + abstractions) that synthesizes to CloudFormation, which can feel natural for software-heavy teams building on AWS. Terraform is declarative and provider-driven, with a workflow that many teams prefer when they want portability beyond AWS, a broad ecosystem, and a consistent way to manage infrastructure across environments.

In the full comparison, we break down:

  • The core mental model difference: CDK constructs vs Terraform configuration + state
  • What day-2 operations look like: drift, updates, and “what changed?” debugging
  • Team and org fit: platform teams, app teams, and multi-account/multi-env setups
  • When a hybrid approach makes sense (e.g., Terraform for baseline infra, CDK for app-owned stacks)

➡️ Read the full article on our blog:

https://spacelift.io/blog/aws-cdk-vs-terraform

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