When should I use native IaC vs Terraform?

Native IaC tools (CloudFormation, Bicep) integrate deeply with their cloud — they support new services on launch day, handle state automatically, and provide native drift detection. Terraform offers a consistent language and workflow across all clouds and has the largest provider ecosystem (3,000+ providers). Use native tools when you are single-cloud and want the tightest integration with zero state management overhead. Use Terraform when you work across multiple clouds, need a unified workflow, or when the community modules accelerate your development. Many organizations use both — Terraform for core infrastructure and native tools for cloud-specific features that Terraform providers lag on.

How do CDK and Pulumi compare as code-first IaC?

Both AWS CDK and Pulumi let you define infrastructure using general-purpose programming languages (TypeScript, Python, Go, C#, Java). CDK synthesizes to CloudFormation templates and is AWS-only. Pulumi works across all clouds and manages its own state. CDK benefits from the full CloudFormation resource coverage and AWS community constructs. Pulumi benefits from multi-cloud support, more flexible state management (local, S3, Pulumi Cloud), and a rich component model. Both support testing with standard unit test frameworks. Choose CDK for AWS-only with TypeScript/Python preference, Pulumi for multi-cloud or when you prefer Go/C#.

Multi-Cloud IaC Compare

MonitoringMulti-Cloud

Compare infrastructure as code tools and services across all major cloud providers.

Filter Comparison

Category

Showing 20 of 20 features.

Feature	AWS	Azure	GCP	OCI
Native IaC Service Core Features	AWS CloudFormation	Azure Resource Manager (ARM) / Bicep	Google Cloud Deployment Manager	OCI Resource Manager (Terraform-based)
Third-Party IaC Core Features	Terraform (AWS Provider), Pulumi, CDK for Terraform	Terraform (AzureRM Provider), Pulumi, Crossplane	Terraform (Google Provider), Pulumi, Config Connector	Terraform (OCI Provider), Pulumi
CDK / Programmatic Core Features	AWS CDK (TypeScript, Python, Java, C#, Go)	Bicep (DSL); CDK for Terraform; Farmer (F#)	CDK for Terraform; Pulumi (TypeScript, Python, Go, C#)	CDK for Terraform; Pulumi support
Pricing Core Features	CloudFormation free; pay for provisioned resources only	ARM/Bicep free; pay for provisioned resources only	Deployment Manager free; pay for provisioned resources	Resource Manager free; pay for provisioned resources
Resource Coverage Core Features	CloudFormation: 900+ resource types; Terraform AWS: 1300+ resources	ARM: all Azure resources; Terraform AzureRM: 1100+ resources	Deployment Manager: 150+ types; Terraform Google: 1000+ resources	Resource Manager: all OCI resources via Terraform OCI provider
Template Language Language & Tooling	CloudFormation: JSON/YAML; CDK synthesizes to CloudFormation	ARM: JSON; Bicep: purpose-built DSL that compiles to ARM JSON	Deployment Manager: YAML + Jinja2 or Python templates	Resource Manager: Terraform HCL natively
Module / Reuse System Language & Tooling	CloudFormation: Nested Stacks, Modules registry; CDK Constructs	Bicep modules with registry; ARM linked templates	Deployment Manager: composite types; Terraform modules	Terraform modules from OCI or public registry
IDE Support Language & Tooling	AWS Toolkit for VS Code; CloudFormation linter (cfn-lint)	Bicep VS Code extension with IntelliSense and validation	No native IDE support; Terraform/Pulumi IDE plugins	Terraform extension for VS Code; OCI console editor
Validation / Linting Language & Tooling	cfn-lint, cfn-guard for policy-as-code validation	Bicep linter, ARM template validation, Azure Policy	Deployment Manager template validation; Terraform validate	Terraform validate and plan; OCI console validation
Preview / Plan Language & Tooling	CloudFormation change sets; CDK diff; Terraform plan	ARM what-if; Bicep what-if; Terraform plan	Deployment Manager preview; Terraform plan	Resource Manager plan job; Terraform plan
State Management State & Drift	CloudFormation: managed by service; Terraform: S3 + DynamoDB backend	ARM: managed by service; Terraform: Azure Storage backend	DM: managed by service; Terraform: GCS backend	Resource Manager: managed state; Terraform: Object Storage backend
Drift Detection State & Drift	CloudFormation drift detection for supported resources	ARM what-if for drift; Azure Policy for compliance drift	No native DM drift detection; Terraform plan shows drift	Resource Manager drift detection job; Terraform plan
Import Existing Resources State & Drift	CloudFormation resource import; Terraform import command	ARM template export from portal; Terraform import	Terraform import; no native DM import	Resource Discovery generates Terraform from existing resources
Rollback Strategy State & Drift	CloudFormation automatic rollback on failure; retain option	ARM deployment rollback to last successful; complete mode	DM rollback on failure; Terraform manual state recovery	Resource Manager automatic rollback on failed apply
Concurrency / Locking State & Drift	CloudFormation: stack-level locking; Terraform: DynamoDB locking	ARM: subscription-level deployment locking; Terraform: blob lease	DM: deployment-level lock; Terraform: GCS object locking	Resource Manager: stack-level locking; Terraform: remote lock
Multi-Account / Org Operations	CloudFormation StackSets for multi-account/region deployments	Management Group-scoped deployments; Tenant-level Bicep	Config Controller for org-level; DM per-project only	Resource Manager stacks across compartments and tenancies
Policy / Guardrails Operations	Service Control Policies; CloudFormation Guard; AWS Config	Azure Policy; Bicep linter rules; management group policies	Organization Policy Service; gcloud org policies	Security Zones; OCI policies with conditional access
Secrets Integration Operations	CloudFormation dynamic references to Secrets Manager and SSM	Bicep references Key Vault secrets at deployment time	Secret Manager integration in Terraform; DM parameter files	Resource Manager references OCI Vault secrets
CI/CD Integration Operations	CodePipeline, CDK Pipelines, GitHub Actions; AWS SAM for serverless	Azure DevOps, GitHub Actions, Bicep deployment tasks	Cloud Build, GitHub Actions, Cloud Deploy integration	OCI DevOps pipelines, GitHub Actions with OCI CLI
Cost Estimation Operations	No native; AWS Pricing Calculator, Infracost for Terraform	ARM what-if cost impact (preview); Infracost for Terraform	No native; Infracost for Terraform cost estimation	Cost Estimator in console; Infracost for Terraform

About This Tool

Infrastructure as Code (IaC) is fundamental to cloud operations, and each cloud provider offers native IaC tools alongside cross-cloud options. AWS has CloudFormation and CDK, Azure has ARM templates, Bicep, and Azure Developer CLI, GCP has Deployment Manager and Config Connector, and OCI has Resource Manager (Terraform-based). Cross-cloud tools like Terraform, Pulumi, and Crossplane add another dimension. This comparison evaluates IaC tools across language support, state management, drift detection, modularity, testing frameworks, and ecosystem maturity to help you choose the right IaC strategy.

When to Use This Tool

•Comparing native IaC tools (CloudFormation, Bicep, Deployment Manager, Resource Manager) with cross-cloud tools (Terraform, Pulumi) for multi-cloud environments
•Evaluating IaC testing and validation capabilities — linting, plan preview, policy-as-code, and drift detection
•Understanding state management approaches — service-managed state (CloudFormation, Bicep) vs external state (Terraform, Pulumi)

Frequently Asked Questions

When should I use native IaC vs Terraform?: Native IaC tools (CloudFormation, Bicep) integrate deeply with their cloud — they support new services on launch day, handle state automatically, and provide native drift detection. Terraform offers a consistent language and workflow across all clouds and has the largest provider ecosystem (3,000+ providers). Use native tools when you are single-cloud and want the tightest integration with zero state management overhead. Use Terraform when you work across multiple clouds, need a unified workflow, or when the community modules accelerate your development. Many organizations use both — Terraform for core infrastructure and native tools for cloud-specific features that Terraform providers lag on.
How do CDK and Pulumi compare as code-first IaC?: Both AWS CDK and Pulumi let you define infrastructure using general-purpose programming languages (TypeScript, Python, Go, C#, Java). CDK synthesizes to CloudFormation templates and is AWS-only. Pulumi works across all clouds and manages its own state. CDK benefits from the full CloudFormation resource coverage and AWS community constructs. Pulumi benefits from multi-cloud support, more flexible state management (local, S3, Pulumi Cloud), and a rich component model. Both support testing with standard unit test frameworks. Choose CDK for AWS-only with TypeScript/Python preference, Pulumi for multi-cloud or when you prefer Go/C#.

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