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Azure Functions vs HCP Terraform

Azure Functions logo

Azure Functions

Cloud

Event-driven serverless compute on Azure

From
Free
Free plan
Yes
Full reviewWebsite
HCP Terraform logo

HCP Terraform

Developer Tools

Infrastructure as code provisioning and management, formerly Terraform Cloud

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Azure Functions consumption plan free grant is capped at 1 million executions and 400,000 GB-seconds of resource consumption per month per subscription, billed per GB-second beyond that; HCP Terraform legacy free version deprecated; no current freemium tier
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Azure Functions and HCP Terraform actually diverge.

Attributes where Azure Functions and HCP Terraform differ
AttributeAzure FunctionsHCP Terraform
CategoryCloudDeveloper Tools

Identical on both: starting price (Free), pricing model (usage-based), free tier (Yes), platforms (Web), user rating (Not yet rated).

What people use each for

The jobs each tool is most often brought in to do.

Azure Functions

  • Event-driven computingnot HCP Terraform
  • Serverless application backendnot HCP Terraform
  • Scalable API endpointsnot HCP Terraform

HCP Terraform

  • Infrastructure as Code managementnot Azure Functions
  • Cloud resource provisioningnot Azure Functions

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Azure Functions

  • Consumption plan free grant is capped at 1 million executions and 400,000 GB-seconds of resource consumption per month per subscription, billed per GB-second beyond that
  • The newer Flex Consumption plan's free grant is smaller still, at 250,000 executions and 100,000 GB-seconds per month
  • Premium plan avoids per-execution charges but bills continuously for allocated core seconds and memory regardless of invocation volume
  • Memory is rounded up to the nearest 128 MB and execution time to the nearest 1 ms for billing, so small overages round upward

HCP Terraform

  • Legacy free version deprecated; no current freemium tier
  • New users receive $500 credit but still require usage to continue service
  • Terraform Enterprise requires custom pricing

Pricing, plan by plan

Azure Functions

Free
  • Consumption Plan$null/month
    • 1 million requests free monthly
    • 400,000 GB-seconds free monthly
    • Billed per second and executions
  • Flex Consumption Plan$null/month
    • 250,000 executions free monthly
    • 100,000 GB-seconds free monthly
    • Event-driven scaling
  • Premium Plan$null/month
    • No execution charges
    • At least one instance required
    • Includes automatic scaling and VNET access

HCP Terraform

Free
  • Essentials$0.1/month
    • Per resource pricing
    • Remote state storage
    • VCS connection
  • Standard$0.47/month
    • Per resource pricing
    • Essentials features plus unlimited modules
    • Module deprecation
  • Premium$0.99/month
    • Per resource pricing
    • Standard features plus module revocation
    • Waypoint actions

Which should you pick?

Choose Azure Functions if

  • You want to start without paying.
Azure Functions review

Choose HCP Terraform if

  • You want to start without paying.
HCP Terraform review

Questions people ask

Is Azure Functions or HCP Terraform better?
Neither clearly leads. Azure Functions starts at Free and HCP Terraform at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Azure Functions or HCP Terraform?
Azure Functions starts at Free and HCP Terraform at Free.
Does Azure Functions or HCP Terraform run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Azure Functions for free?
Both have a free tier, so you can try either at no cost before committing.
What is Azure Functions best used for?
Azure Functions is most often used for event-driven computing, serverless application backend, scalable api endpoints. Of those, event-driven computing and serverless application backend are not what HCP Terraform is typically brought in for.

Answered from the vendors’ own pages

Azure Functions: Does Azure Functions have a free tier?

Yes, Azure Functions includes a monthly free grant of 1 million requests and 400,000 GB-seconds on the Consumption Plan, or 250,000 executions and 100,000 GB-seconds on Flex Consumption.

Source
HCP Terraform: How much does HCP Terraform cost?

HCP Terraform uses per-resource pricing starting at $0.10/month/resource for Essentials, $0.47/month/resource for Standard, and $0.99/month/resource for Premium.

Source
Azure Functions: What is Azure Functions' pricing model?

Azure Functions uses usage-based pricing. Consumption plans charge per second of resource consumption and per execution, measured in gigabyte-seconds and rounded to the nearest 128 MB.

Source
HCP Terraform: Does HCP Terraform offer a free tier?

No, the legacy free version has been deprecated. However, new users receive $500 credit to try the service.

Source
Azure Functions: What is the minimum execution time for Azure Functions?

The minimum execution time is 100 milliseconds on Consumption plans. Premium plans charge based on core seconds and allocated memory.

Source
HCP Terraform: What does the Standard plan include?

Standard plan at $0.47/month/resource includes unlimited modules, module deprecation, team notifications, no-code provisioning, and Waypoint templates.

Source
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