Best Infrastructure as Code Tools in 2026

Puppet manages infrastructure configuration at scale. Server automation with mature ecosystem-configuration management for enterprise complexity. The ecosystem is established. The scale is enterprise. The model is declarative. Enterprises managing server fleets use Puppet for mature configuration management.

Harness is a DevOps platform providing continuous delivery, CI/CD, infrastructure as code management, and security testing orchestration with flexible modular pricing.

Ansible is an open source automation platform by Red Hat for IT automation including configuration management, application deployment, and orchestration using simple YAML playbooks.

CloudFormation manages AWS infrastructure through declarative templates. Describe the resources you want, and CloudFormation creates them in the right order with proper dependencies. Stack updates are atomic-everything succeeds or rolls back. Change sets preview what will happen before you apply changes. Drift detection finds manual modifications. Teams running production AWS infrastructure treat CloudFormation templates as the source of truth for what exists in their accounts.

Terraform is an infrastructure as code tool by HashiCorp for provisioning, managing, and versioning infrastructure across cloud providers with declarative configuration files.

AWS CDK lets you define cloud infrastructure using TypeScript, Python, Java, or C# instead of YAML templates. Write code that compiles to CloudFormation, with type checking and IDE support along the way. Constructs package reusable infrastructure patterns. The abstraction level lets you work at whatever detail makes sense-high-level components or low-level resources. Developers who find CloudFormation templates painful choose CDK because infrastructure is easier to write, test, and maintain when it's actual code.

Golioth provides a complete device-to-cloud foundation specifically designed for hardware teams building IoT products. It eliminates the need for extensive custom cloud infrastructure development, allowing teams to focus on their core product. The platform supports a wide range of hardware and RTOS, enabling rapid prototyping and deployment of connected devices. Golioth offers robust device management capabilities, including secure over-the-air (OTA) updates, remote configuration, and comprehensive logging. Its 'Pipelines' feature simplifies data routing and transformation, allowing raw device data to be easily sent to various cloud services, analytics platforms, or AI models. The platform also integrates hybrid AI orchestration, enabling edge inference and continuous model improvement using real-world data from deployed devices. Security is built-in from the ground up with end-to-end encryption and certificate authentication.

Crossplane extends Kubernetes to manage cloud infrastructure. Define databases, storage, and other cloud services using the same Kubernetes resources and tools you use for applications. Cloud providers become Kubernetes resources. The same GitOps workflows manage applications and infrastructure. Composition lets you build reusable abstractions. Platform teams wanting unified infrastructure management choose Crossplane to extend Kubernetes into cloud resource provisioning.

Packer is an open-source tool for creating identical machine images for multiple platforms from a single source configuration. It streamlines the process of building 'golden images' that can be used across various cloud providers and virtualization technologies, ensuring consistency and reliability in deployments. By automating the image creation process, Packer helps reduce configuration drift and simplifies infrastructure management. This tool is ideal for DevOps engineers, system administrators, and developers who need to create and manage consistent machine images across different environments, such as AWS, Docker, and other cloud platforms. It integrates seamlessly into existing CI/CD pipelines, enabling automated image builds and updates. Packer's core value lies in its ability to produce immutable infrastructure, where every server is built from a pre-configured image, leading to faster deployments, easier rollbacks, and improved security posture. It supports a wide range of builders and provisioners, offering flexibility in how images are created and configured.

Pulumi is an infrastructure as code platform that lets you define, deploy, and manage cloud infrastructure using familiar programming languages like TypeScript, Python, Go, and C#.