7 Best Alternatives to Pulumi for IaC in 2026

Why look beyond Pulumi

Pulumi offers a developer-centric approach to infrastructure as code (IaC) by allowing engineering teams to use familiar programming languages. This contrasts with domain-specific languages (DSLs) often found in other IaC tools. Its strength lies in enabling complex infrastructure definitions through code, supporting multi-cloud environments, and integrating with CI/CD pipelines.

However, specific considerations might lead organizations to explore alternatives. Teams deeply invested in a particular cloud ecosystem, such as AWS or Azure, might find that native IaC tools offer tighter integration and potentially faster feature adoption for new services. Organizations prioritizing a declarative, configuration-over-code approach might prefer tools like Terraform or CloudFormation, which emphasize state management and idempotency through dedicated DSLs. For smaller projects or teams with limited programming expertise, the overhead of using a general-purpose language for infrastructure might be perceived as higher than using a simpler, declarative syntax. Additionally, cost models and community support for specific cloud providers can influence tool selection, prompting a comparison with other IaC solutions.

Top alternatives ranked

1. 1. HashiCorp Terraform — declarative infrastructure provisioning across clouds

   HashiCorp Terraform is an open-source infrastructure as code tool that allows users to define and provision data center infrastructure using a declarative configuration language known as HashiCorp Configuration Language (HCL). Terraform supports a vast ecosystem of providers, enabling the management of resources across numerous public clouds, private clouds, and on-premises solutions. Its core strength lies in its ability to manage the lifecycle of infrastructure with a consistent workflow, previewing changes before application, and maintaining state to track managed resources. While Pulumi uses general-purpose languages, Terraform's HCL is designed specifically for infrastructure, often simplifying resource declarations for teams familiar with its syntax.

   Terraform excels in multi-cloud and hybrid-cloud environments where a single tool is preferred for managing diverse infrastructure. Its state management capabilities are robust, allowing for collaborative team workflows and preventing configuration drift. The community around Terraform is extensive, providing a wealth of modules and solutions for common infrastructure patterns. For organizations prioritizing a declarative configuration language, comprehensive provider support, and mature state management features, Terraform presents a strong alternative to Pulumi. Its plan-and-apply workflow offers explicit control over infrastructure changes, which can be beneficial in highly regulated environments. Learn more about HashiCorp Terraform.

   Best for: Multi-cloud and hybrid-cloud infrastructure provisioning, declarative configuration management, extensive provider ecosystem, idempotent infrastructure deployment.

2. 2. AWS CloudFormation — native IaC for AWS services

   AWS CloudFormation is an infrastructure as code service that allows developers to model, provision, and manage AWS resources using declarative templates. These templates can be written in JSON or YAML. CloudFormation integrates deeply with AWS services, often supporting new features and services shortly after their release. It provides a reliable way to provision and update infrastructure in a controlled and repeatable manner, handling dependencies between resources automatically. Unlike Pulumi, which is cloud-agnostic and uses general programming languages, CloudFormation is purpose-built for the AWS ecosystem, offering a native experience.

   CloudFormation is particularly advantageous for organizations that are heavily invested in AWS and prefer a fully managed, integrated solution. It simplifies the management of complex AWS environments by treating infrastructure as code, enabling version control, peer review, and automated deployments. The service also includes features like rollback capabilities for safe deployments and drift detection to identify manual changes to resources. For teams operating exclusively or predominantly within AWS, CloudFormation can offer a tighter integration and simpler operational model compared to a multi-cloud tool, especially when leveraging AWS-specific features like StackSets for multi-account deployments. Discover AWS CloudFormation capabilities.

   Best for: AWS-exclusive infrastructure provisioning, deep integration with AWS services, organizations requiring native AWS IaC, automated resource dependency management.

3. 3. Azure Resource Manager — unified management for Azure resources

   Azure Resource Manager (ARM) is the deployment and management service for Azure. It provides a management layer that enables users to create, update, and delete resources in an Azure subscription. ARM templates, written in JSON, allow for declarative deployment of Azure services, grouping related resources into logical containers. Similar to AWS CloudFormation, ARM is a cloud-native IaC solution, but specifically for Microsoft Azure. While Pulumi supports Azure, ARM offers a highly optimized and integrated experience within the Azure ecosystem, often adopting new Azure features and services upon release.

   Organizations committed to the Microsoft Azure cloud benefit significantly from ARM templates. They offer consistent deployment, management, and governance across all resources within Azure, ensuring that environments are configured identically. ARM also includes features for defining dependencies between resources, handling parallel deployments where possible, and enforcing access control through Azure Role-Based Access Control (RBAC). For teams with extensive Azure deployments, ARM provides a robust and tightly integrated platform for managing infrastructure as code, leveraging Azure-specific tooling and capabilities for large-scale deployments and compliance. Explore Azure Resource Manager features.

   Best for: Azure-exclusive infrastructure provisioning, native Azure IaC, consistent deployment and management of Azure resources, integrating with Azure governance policies.

4. 4. Google Cloud Deployment Manager — Google Cloud's declarative infrastructure service

   Google Cloud Deployment Manager is an infrastructure deployment service that automates the creation and management of Google Cloud resources. It allows users to define resources declaratively using YAML configurations, with the option to use Python or Jinja2 templates for more complex or programmatic deployments. Deployment Manager is Google Cloud's native IaC solution, offering deep integration with the Google Cloud ecosystem. It operates on a similar principle to AWS CloudFormation and Azure Resource Manager, providing a cloud-specific tool for infrastructure provisioning.

   For organizations primarily using Google Cloud, Deployment Manager offers a streamlined way to define and manage infrastructure. It enables repeatable deployments, ensures consistency across environments, and supports version control for infrastructure configurations. While Pulumi can manage Google Cloud resources, Deployment Manager provides a native approach that can simplify operational overhead for Google Cloud-centric teams. Its templating capabilities allow for reusable configurations, and it integrates with other Google Cloud services for monitoring and logging. Teams looking for a fully integrated, declarative IaC solution within the Google Cloud environment will find Deployment Manager a suitable alternative. Learn about Google Cloud Deployment Manager.

   Best for: Google Cloud-exclusive infrastructure provisioning, native Google Cloud IaC, repeatable and consistent deployments in GCP, integrating with other Google Cloud services.

5. 5. OpenStack Heat — orchestration service for private cloud infrastructure

   OpenStack Heat is the orchestration component of the OpenStack cloud operating system, designed to allow developers to define and manage infrastructure resources using templates. These templates, written in YAML or JSON, describe the infrastructure in a declarative manner, enabling automated provisioning and lifecycle management. Heat is specifically tailored for OpenStack-based private clouds, offering a robust solution for enterprises that manage their own cloud environments. While Pulumi can interact with OpenStack via its provider, Heat is the native orchestration engine for OpenStack, providing deep integration with its services.

   Organizations operating private clouds built on OpenStack will find Heat to be a fundamental and powerful tool. It allows for the definition of complex multi-resource cloud applications, ensuring that all components are deployed and configured correctly. Heat templates can manage everything from virtual machines and networks to storage volumes and security groups within an OpenStack environment. For enterprises prioritizing control over their on-premises or private cloud infrastructure, and already leveraging OpenStack, Heat provides an integrated and mature IaC solution that is fully aligned with the OpenStack ecosystem. Explore OpenStack Heat documentation.

   Best for: OpenStack-based private cloud infrastructure management, on-premises cloud deployments, declarative orchestration of OpenStack resources, organizations requiring full control over their cloud stack.

Side-by-side

How to pick

Selecting the right infrastructure as code (IaC) tool depends on several factors, including your existing cloud environment, team's programming skills, and specific project requirements. Consider the following decision points:

• Cloud Ecosystem Lock-in:
  • If your organization operates exclusively within a single cloud provider (e.g., AWS, Azure, Google Cloud), native tools like AWS CloudFormation, Azure Resource Manager, or Google Cloud Deployment Manager often offer the tightest integration and fastest support for new services. These tools are purpose-built for their respective clouds, potentially simplifying operational overhead.
  • If you manage an OpenStack private cloud, OpenStack Heat is the direct, native solution for orchestration.
• Multi-cloud and Hybrid Cloud Strategy:
  • For environments spanning multiple public clouds or combining public and private cloud resources, HashiCorp Terraform stands out due to its extensive provider ecosystem and cloud-agnostic HCL. Pulumi also excels here, offering multi-cloud support through general-purpose programming languages.
• Team Skills and Preferences:
  • If your development team is proficient in general-purpose programming languages (Python, TypeScript, Go, C#) and prefers to define infrastructure using familiar coding paradigms, Pulumi is a strong choice. It allows for advanced logic, testing, and abstraction using existing programming constructs.
  • If your team prefers a declarative, configuration-focused approach with a dedicated DSL, Terraform's HCL might be more appealing. It often has a shallower learning curve for those new to IaC but familiar with configuration files.
  • For teams that are less programming-intensive and prefer simpler YAML/JSON definitions, cloud-native tools or Terraform can be easier to adopt initially.
• State Management and Collaboration:
  • All major IaC tools manage state, but how they do it varies. Pulumi manages state in Pulumi Cloud by default, which can simplify collaboration. Terraform offers various backend options for state management, including remote storage, which is crucial for team environments. Cloud-native tools integrate state management directly with their respective platforms. Evaluate which state management approach aligns best with your team's workflow and security requirements.
• Governance and Policy Enforcement:
  • Many organizations require robust policy enforcement. Pulumi offers policy-as-code capabilities. Cloud-native tools like AWS CloudFormation (with AWS Config/SCPs) and Azure Resource Manager (with Azure Policy) provide strong native governance features. Terraform integrates with tools like Sentinel (for Enterprise users) or Open Policy Agent for policy enforcement. Consider how easily the tool integrates with your existing governance framework.
• Community and Ecosystem:
  • A strong community and a rich ecosystem of modules, templates, and integrations can significantly impact the long-term usability of an IaC tool. Terraform has a very large and active community. Pulumi's community is also growing rapidly, bolstered by its use of popular programming languages. Cloud-native tools benefit from the vast resources and documentation provided by their respective cloud providers.

By carefully evaluating these factors against your organization's specific context, you can determine which Pulumi alternative best fits your infrastructure automation needs.