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Terragrunt vs Spacelift

Terragrunt and Spacelift both land on Depends.

Terragrunt

terragrunt.io

Depends
Confidence: Medium

Buy if you run many Terraform environments across accounts and want DRY config plus free CI; small teams and Terraform newcomers should stay vanilla.

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Terragrunt versus Spacelift
CompareTerragruntSpacelift
VerdictDependsDepends
Best forMulti-account, multi-environment cloud estatesPlatform teams running multi-tool IaC
Who it's not forSmall teams with a handful of Terraform modulesSolo devs running terraform apply locally
PrivacyOpen-source with a public security policy and advisories; multiple 2026 CVEs disclosed, including arbitrary file deletion via malicious modules.⁴No known public vulnerabilities found in the sources reviewed.
Support qualityNo support quality evidence foundNo support evidence found in sources.
Public sentimentReddit sentiment is split: multi-environment shops praise the scale gains while many practitioners argue the extra layer and CI wiring cost more than they return.¹Users on Reddit and review sites generally praise Spacelift's multi-tool orchestration and ease of management, often preferring it over Terraform Cloud, though independent review volume remains small.15
Biggest gotchaOnce adopted, backing out to vanilla Terraform is painful . plan for permanent lock-in.Starter tier starts at $399/month . steep for small teams.12

Pick Terragrunt when

  • Multi-account, multi-environment cloud estates
  • Teams DRY-ing repeated Terraform boilerplate
  • Platform teams standardizing IaC at scale
  • Terraform-heavy orgs wanting free native CI

When Terragrunt is not a fit

  • Small teams with a handful of Terraform modules
  • Terraform newcomers . learn vanilla first
  • Anyone wanting a hosted UI; this is CLI glue
  • Teams unwilling to own an HCL layer forever

Pick Spacelift when

  • Platform teams running multi-tool IaC
  • Regulated orgs needing policy-as-code
  • High-deployment-volume cloud teams
  • Teams outgrowing Terraform Cloud

When Spacelift is not a fit

  • Solo devs running terraform apply locally
  • Startups with a handful of stacks . CI scripts suffice
  • Teams without dedicated DevOps capacity
  • Anyone wanting a cheap, simple pipeline runner

Sources

  1. Should I use Terragrunt? : r/Terraformreddit.com
    review
  2. Am I the only one who doesn't like Terragrunt? : r/Terraformreddit.com
    review
  3. Use Terragrunt or remain Vanilla tf? : r/devopsreddit.com
    review
  4. Terragrunt Arbitrary File Deletion (GHSA-8394-6f8r-whxg)github.com
    security
  5. XSS in terragrunt (CVE-2026-27142) . Snyksecurity.snyk.io
    security
  6. Announcing the Terragrunt Scale Free Tiergruntwork.io
    official
  7. Gruntwork Pricinggruntwork.io
    official
  8. Terramate vs Terragrunt: A 2026 Comparisonterramate.io
    review
  9. Terragrunt vs. Terraform . Spaceliftspacelift.io
    review
  10. Big Bang (repo1.dso.mil) terragrunt.hcl templaterepo1.dso.mil
    official
  11. Spacelift Plans and Pricingspacelift.io
    official
  12. Spacelift vs Terraform Cloud vs ControlMonkeycontrolmonkey.io
    review
  13. Top 9 Spacelift Alternatives in 2026bunnyshell.com
    review
  14. Terraform Cloud vs Spaceliftscalr.com
    review
  15. Feedback on Spacelift . Reddit r/devopsreddit.com
    review
  16. Introducing Spacelift Self-Hosted . Reddit r/Terraformreddit.com
    review