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It's a split decision.
Choose OpenStack when your team needs to operate a cloud infrastructure platform across compute, storage and networking, including on-premises or edge deployments. Choose Terraform when you need versioned infrastructure configuration and CLI workflows across providers such as AWS, Azure and Google Cloud. They solve different layers: OpenStack supplies cloud services, while Terraform provisions infrastructure. You can use Terraform with cloud providers, but the sources do not establish a specific OpenStack integration.
01Side by side
| OpenStack | Terraform | |
|---|---|---|
| Pricing model | Free software; deployment and operations costs vary | HCP billed per managed resource-hour |
| Free tier | Core software free to download | 500 resources, one run, $500 HCP credit |
| Open source and licence | Community-developed open-source software | Terraform licence not published |
| Self-hosting | On-premises, public cloud or edge | HCP Terraform offers hosted team workflows |
| APIs and developer interface | Manage infrastructure through APIs or dashboard | Configuration language and CLI workflows |
| Integrations | Various open-source tools; examples unnamed | AWS, Azure, Google Cloud, Docker and more |
| Deployment model | On-premises, public cloud and edge | Builds infrastructure across cloud providers |
| Limits and scaling | Controls large compute, storage and networking pools | Free tier capped at 500 managed resources |
OpenStack Choose OpenStack if
- Choose OpenStack if you need to run an infrastructure cloud on-premises or at the edge.
- Choose OpenStack if your team needs control of compute, storage and networking pools.
- Choose OpenStack if you want community-developed open-source cloud software.
Terraform Choose Terraform if
- Choose Terraform if you want infrastructure described and versioned in configuration.
- Choose Terraform if you provision across providers such as AWS, Azure and Google Cloud.
- Choose Terraform if your team needs hosted collaboration through HCP Terraform.
02Pricing at real usage
OpenStack’s core software is free to download and self-host, but operating a cloud still requires infrastructure and engineering work. The project publishes no software subscription price. Terraform’s CLI is separate from HCP Terraform’s hosted plans. HCP Free costs $0 and includes unlimited users, up to 500 managed resources, one concurrent run and $500 HCP credit. Use above 500 resources requires upgrading to a paid tier. Essentials is $0.00013 per managed resource-hour; Standard is $0.00064; Premium is $0.00135. The pricing page lists $500 HCP trial credit for paid tiers. HCP charges grow with managed resources and hours, not seat count. Enterprise uses custom pricing; seat and usage limits are not published.
03API, SDKs and integration
OpenStack manages compute, storage and networking through APIs or a dashboard. Its homepage says it can integrate with various open-source tools and platforms, but does not name specific integrations. Terraform uses its configuration language to describe infrastructure and its CLI to manage workflows. Its homepage lists tutorials and use cases for Amazon Web Services, Azure, Google Cloud Platform, Oracle Cloud, Docker, GitHub Actions, Vercel and HCP Terraform. That is a broader named set of integrations than OpenStack’s homepage provides, though it is not a guarantee that every service has the same capabilities. Terraform’s documentation includes the configuration language, CLI, provider use, plugin development and Registry publishing. The homepages do not name SDKs for either product. For OpenStack, check the API documentation and the specific service’s SDK support before choosing a client language; for Terraform, start with its provider documentation and tutorials.
04Open source, self-hosting and lock-in
OpenStack is community-developed open-source software that teams can download and self-host. Its deployment options include on-premises, public cloud and edge, giving operators control over where infrastructure runs. Terraform’s homepage describes the tool and its CLI, and offers HCP Terraform and Terraform Enterprise; HashiCorp does not state Terraform’s license or establish self-hosting terms on the product homepage. HCP Terraform is a hosted team-collaboration option. OpenStack’s APIs offer an interface for managing resources, while Terraform configuration records desired infrastructure; neither point alone guarantees a simple move between platforms. HashiCorp does not publish data-export guarantees on the product homepage. Before committing, ask how Terraform state can be exported and migrated, and map OpenStack resources to the target platform’s APIs and services. Expect migration work when providers, resource models or operational workflows differ.
Questions people ask
Is Terraform for AWS?
Yes. Terraform’s homepage includes Amazon Web Services among its tutorials and use cases. The tool is not limited to AWS: the same page also lists Azure, Google Cloud Platform, Oracle Cloud and Docker. Terraform describes and manages infrastructure through configuration and CLI workflows.
What are alternatives to OpenStack?
Terraform is not a direct replacement for OpenStack: OpenStack provides cloud infrastructure services, while Terraform describes and provisions infrastructure. If you need an alternative cloud platform, compare candidates by their compute, storage, networking, deployment and API capabilities before choosing.
Which is better, Terraform or Ansible?
It depends on the task. Terraform is an infrastructure-as-code tool for building, changing and versioning infrastructure through configuration and CLI workflows. The products compared here do not establish Ansible’s feature set, so verify its current capabilities and compare both against your provisioning and operations requirements.
What are the key differences between OpenStack cloud and AWS?
OpenStack is open-source cloud software that organizations can run on-premises, in public clouds or at the edge. Terraform’s tutorials include AWS, but Terraform is an infrastructure-as-code tool, not a cloud provider. Compare OpenStack and AWS as infrastructure platforms, then assess Terraform separately as a provisioning tool.