Compare Top Infrastructure as Code (IaC) Tools

July 11, 2025
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Compare Top Infrastructure as Code (IaC) Tools

What IaC is?

Is a modern IT practice where infrastructure is defined, managed, and provisioned using code, rather than through manual processes or physical hardware configuration. You write code (like scripts or configuration files) to tell the system what infrastructure you want—and it sets it up for you automatically.

Benefits of Using IaC Tools:

Automate and speed up infrastructure provisioning
Deploying microservices environments
Enable version control for infrastructure
Improve scalability and reduce manual errors
Disaster recovery setup
Creating repeatable test/dev/stage/prod environments

Popular IaC Tools:

Tool	Details
Terraform	Cloud-agnostic, declarative infrastructure
AWS CloudFormation	Native to AWS, YAML/JSON templates
Ansible	Configuration management, agentless
Puppet & Chef	Automation and configuration frameworks

Tool	Type	Language Used	Cloud Support	Pros	Cons	Best For
Terraform	Declarative	HCL (HashiCorp)	Multi-cloud	Cloud agnostic Strong community Easy modularity	Steeper learning curve than Ansible No native config mgmt	Multi-cloud infrastructure provisioning
AWS CloudFormation	Declarative	YAML / JSON	AWS only	Deep AWS integration Free for AWS users	Limited to AWS Verbose syntax	Pure AWS environments
Ansible	Procedural + Declarative	YAML (Playbooks)	Cloud-agnostic + On-prem	Simple to use Agentless Fast adoption	Not ideal for large-scale infra provisioning	Config management & lightweight provisioning
Pulumi	Declarative	Python, JS, Go, .NET	Multi-cloud	Uses real programming languages Great for dev teams	Less community than Terraform Slightly complex	Developers & teams wanting code-native infra
Chef	Procedural	Ruby DSL	Cloud/on-prem	Powerful for config mgmt Strong test support	Complex to set up Ruby learning needed	Large-scale environments needing complex configurations
Puppet	Declarative	Puppet DSL	Cloud/on-prem	Great compliance reporting Mature tool	Steep learning curve Resource-heavy	Enterprises needing policy enforcement & compliance
SaltStack	Hybrid	YAML + Jinja	Cloud/on-prem	Scalable & fast Event-driven automation	Complex terminology Smaller community	Real-time automation & event-driven infra
Azure ARM Templates	Declarative	JSON	Azure only	Tight Azure integration No extra tools needed	JSON is verbose Less reusable than Terraform	Azure-specific projects
Google Cloud Deployment Manager	Declarative	YAML + Python/Jinja2	GCP only	Good GCP integration Easy for small setups	Less flexibility Limited community	Small GCP projects

What to use:

Use Terraform for multi-cloud flexibility with strong modular design.

Use CloudFormation or ARM Templates for working exclusively with AWS or Azure.

Use Ansible if focussed more on configuration than full infra setup, and want fast onboarding.

Use Pulumi if using familiar programming languages like Python or JavaScript.

Use Chef or Puppet for enterprise-level config management, especially with compliance needs.

Use SaltStack when you need real-time automation at scale.

Configuration Management Tools (Focus on how things are configured)

Ansible

Agentless, simple syntax (YAML)

Used for provisioning and configuration

Chef

Uses Ruby-based DSL

Great for complex configurations

Puppet

Uses its own declarative language

Strong focus on desired state and compliance

SaltStack

Fast and scalable, supports event-driven automation

Hybrid Tools (Do both provisioning & configuration)

Pulumi

Supports multiple programming languages like Python, JavaScript, TypeScript, Go

Good for developers who prefer using standard languages over DSLs

Crossplane

Kubernetes-native IaC tool

Manages cloud infrastructure using Kubernetes CRDs

Infrastructure as Code has transformed the way teams manage and scale infrastructure, enabling greater consistency, speed, and reliability. Choosing the right IaC tool depends largely on your environment, team expertise, scalability needs, and cloud provider.

If you’re working in a multi-cloud setup, tools like Terraform or Pulumi offer flexibility and scalability.
For cloud-native teams, AWS CloudFormation, ARM Templates, or Google Cloud Deployment Manager provide seamless integration.
If configuration management and automation are your priorities, Ansible, Chef, or Puppet might be the best fit.

At Sails, we can help you implement the right IaC solution tailored to your business needs—ensuring faster deployments, improved consistency, and seamless scalability across your environments.

Sricharan Kocherlakota

(Director of Engineering)
www.sailssoftware.com