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Cybersecurity · head to head

Cisco Duo vs HCP Terraform

Cisco Duo logo

Cisco Duo

Cybersecurity

Trusted access for all users, all devices

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: Cisco Duo free tier limited to 10 users maximum; 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 Cisco Duo and HCP Terraform actually diverge.

Attributes where Cisco Duo and HCP Terraform differ
AttributeCisco DuoHCP Terraform
Pricing modelsubscriptionusage-based
CategoryCybersecurityDeveloper Tools

Identical on both: starting price (Free), 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.

Cisco Duo

  • Eliminating phishing with passwordless authnot HCP Terraform
  • Implementing zero trust with device trustnot HCP Terraform
  • Protecting sessions from hijacking and theftnot HCP Terraform
  • Managing compliance for regulated industriesnot HCP Terraform

HCP Terraform

  • Infrastructure as Code managementnot Cisco Duo
  • Cloud resource provisioningnot Cisco Duo

Where each one falls short

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

Cisco Duo

  • Free tier limited to 10 users maximum
  • Licenses must be purchased in 10-user increments (under 100 users) or 25-user increments (100+ users)
  • Pricing is per-user per-month with minimum purchase increments

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

Cisco Duo

Free
  • FreeFree
    • Multi-factor authentication (MFA)
    • Seamless integrations
    • Authenticator app
  • Essentials$3/month
    • All Free features
    • Duo Directory
    • Phishing-resistant MFA
  • Advantage$6/month
    • All Essentials features
    • Identity intelligence
    • Cisco Identity Intelligence (ISPM, ITDR)
  • Premier$9/month
    • All Advantage features
    • Complete device trust
    • VPN-less remote 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 Cisco Duo if

  • You want to start without paying.
Cisco Duo review

Choose HCP Terraform if

  • You want to start without paying.
HCP Terraform review

Questions people ask

Is Cisco Duo or HCP Terraform better?
Neither clearly leads. Cisco Duo 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, Cisco Duo or HCP Terraform?
Cisco Duo starts at Free and HCP Terraform at Free.
Does Cisco Duo or HCP Terraform run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Cisco Duo for free?
Both have a free tier, so you can try either at no cost before committing.
What is Cisco Duo best used for?
Cisco Duo is most often used for eliminating phishing with passwordless auth, implementing zero trust with device trust, protecting sessions from hijacking and theft, managing compliance for regulated industries. Of those, eliminating phishing with passwordless auth and implementing zero trust with device trust are not what HCP Terraform is typically brought in for.

Answered from the vendors’ own pages

Cisco Duo: How much does Cisco Duo cost?

Cisco Duo Free is $0/user/month (up to 10 users). Paid plans start at $3/user/month (Essentials), $6/user/month (Advantage), and $9/user/month (Premier). Billing is per-user per-month.

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
Cisco Duo: Is Cisco Duo free to try?

Yes, Duo Free offers multi-factor authentication and seamless integrations at $0/user/month for up to 10 users.

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
Cisco Duo: What is the minimum purchase for Cisco Duo?

Organizations must buy licenses in 10-user increments for under 100 users, or 25-user increments for 100 or more users. Plans are modifiable at any time.

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
Cisco Duo: What does the Advantage plan add over Essentials?

Advantage ($6/user/month) adds identity intelligence, Cisco Identity Intelligence (ISPM, ITDR), Duo Passport, session theft protection, Active Directory Defense, and risk-based authentication.

Source
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