Pulumi ESC vs HashiCorp Vault -- Secrets Management Compared

Pulumi ESC vs HashiCorp Vault (2026)

Pulumi ESC (secrets management) and HashiCorp Vault (open source) are cybersecurity tools that serve different segments of the market. Pulumi ESC is cloud-hosted with per-user tiers pricing and is best suited for teams using pulumi for iac who need a secrets layer that composes multiple backends. HashiCorp Vault offers cloud-hosted and self-hosted with open source + enterprise pricing and targets teams needing flexible, self-hosted secrets management with extensive plugin ecosystem.

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The Verdict

HashiCorp Vault stands out as an open-source alternative, while Pulumi ESC follows a per-user tiers pricing model. HashiCorp Vault offers self-hosted deployment for teams with strict data residency requirements, while Pulumi ESC is cloud-only. Ultimately, the right choice depends on your organization's specific requirements, compliance needs, and existing technology stack.

Tried Pulumi ESC or HashiCorp Vault? Drop a quick rating.

Pulumi ESC vs HashiCorp Vault at a Glance

Pulumi ESCHashiCorp Vault
CategorySecrets ManagementOpen Source
PricingFree tier; Team from $50/user/mo; Business from $90/user/moFree (OSS) / Enterprise from $0.03/hr
Pricing ModelPer-user tiersOpen Source + Enterprise
Open SourceNoYes
Cloud HostedYesYes
Self-HostedNoYes
Founded20242015
Rating4.1/54.5/5

Feature Comparison

Key capabilities of Pulumi ESC and HashiCorp Vault compared side by side.

Pulumi ESC

  • +Compose environments from multiple secret sources
  • +Providers for AWS, Azure, GCP, Vault, Doppler, 1Password, GitHub
  • +Environment variables, file, or SDK access modes
  • +Versioned environments with rollback
  • +Rotation schedules and OIDC-based auth
  • +Native integration with Pulumi IaC
  • +ESC CLI and REST API
  • +Works with non-Pulumi workflows (CI/CD, runtime apps)
  • +Audit logs and access policies
  • +RBAC with role-based environment access

HashiCorp Vault

  • +Dynamic secrets generation
  • +Data encryption as a service
  • +Identity-based access control
  • +Secret leasing and revocation
  • +Audit logging
  • +Multi-cloud support
  • +PKI certificate management
  • +Database credential rotation

Key Differentiators

Unique to Pulumi ESC

  • Providers for AWS, Azure, GCP, Vault, Doppler, 1Password, GitHub
  • Versioned environments with rollback
  • Native integration with Pulumi IaC
  • ESC CLI and REST API

Unique to HashiCorp Vault

  • Dynamic secrets generation
  • Data encryption as a service
  • Multi-cloud support
  • PKI certificate management

When to Choose Each

Choose Pulumi ESC if...

  • →You need a tool best suited for teams using pulumi for iac who need a secrets layer that composes multiple backends
  • →Per-user tiers pricing fits your budget model

Choose HashiCorp Vault if...

  • →You need a tool best suited for teams needing flexible, self-hosted secrets management with extensive plugin ecosystem
  • →You want an open-source solution with full code transparency
  • →You require self-hosted deployment for data sovereignty
  • →Open Source + Enterprise pricing fits your budget model

Compliance & Certifications

Pulumi ESC

SOC 2 Type 2

HashiCorp Vault

No certifications listed

Also Worth Considering: SplitSecure

SplitSecure logoSplitSecure
Distributed Security

Why SplitSecure? Distributed secrets management — no vault, no vendor dependency. Splits secrets across devices you control using Shamir Secret Sharing.

Best For

Highest-sensitivity accounts, regulated industries, and MSPs needing zero vendor dependency

Key Features
Shamir Secret Sharing across devicesZero vendor dependency architectureAutomatic audit trail generationNo vault infrastructure required+4 more
Pros
  • +Zero vendor dependency — secrets work if SplitSecure goes down
  • +Secrets never leave your environment
  • +Architecturally resistant to social engineering and account takeover
Cons
  • –Not designed for CI/CD pipeline secrets
  • –Focused on human access, not machine-to-machine
  • –Newer platform with smaller market presence
Self-Hosted
View Profile

Pros & Cons Comparison

HashiCorp Vault

Pros

  • +Massive community and ecosystem
  • +Highly extensible with plugins
  • +Strong enterprise features
  • +Multi-cloud and hybrid support
  • +Free open-source tier

Cons

  • –Steep learning curve
  • –Complex to operate at scale
  • –Requires dedicated infrastructure
  • –Enterprise features require paid license

Pulumi ESC

Pros

  • +Sits cleanly on top of existing secrets stores — no migration needed
  • +Composition model makes multi-cloud environments simple
  • +Strong fit if you already use Pulumi for IaC
  • +OIDC-based auth eliminates static Pulumi tokens

Cons

  • –Newer product; smaller community than Doppler/Infisical
  • –Best value only realized if you adopt Pulumi IaC too
  • –Per-user pricing at the Team tier is steep
  • –No self-hosted option

Other Pulumi ESC Alternatives

Doppler logo
Doppler

Developer-first universal secrets management platform

Infisical logo
Infisical

Open-source end-to-end encrypted secrets management for teams

External Secrets Operator logo
External Secrets Operator

K8s operator that syncs secrets from external stores into Kubernetes Secrets

Sources & References

  1. Pulumi ESC (Official Site)[Vendor]
  2. Pulumi ESC Reviews on G2[User Reviews]
  3. Pulumi ESC Reviews on TrustRadius[User Reviews]
  4. Pulumi ESC Reviews on PeerSpot[User Reviews]
  5. HashiCorp Vault (Official Site)[Vendor]
  6. HashiCorp Vault Reviews on G2[User Reviews]
  7. HashiCorp Vault Reviews on TrustRadius[User Reviews]
  8. HashiCorp Vault Reviews on PeerSpot[User Reviews]
  9. Gartner Market Guide for Secrets Management[Analyst Report]
  10. Forrester Wave: Secrets Management, Q4 2023[Analyst Report]
  11. GigaOm Radar for Key Management[Analyst Report]
  12. NIST SP 800-57: Recommendation for Key Management[Government Standard]
  13. CIS Controls: Safeguard 3.11 – Encrypt Sensitive Data at Rest[Industry Framework]

Pulumi ESC vs HashiCorp Vault FAQ

Common questions about choosing between Pulumi ESC and HashiCorp Vault.

What is the main difference between Pulumi ESC and HashiCorp Vault?

Pulumi ESC (secrets management) and HashiCorp Vault (open source) are cybersecurity tools that serve different segments of the market. Pulumi ESC is cloud-hosted with per-user tiers pricing and is best suited for teams using pulumi for iac who need a secrets layer that composes multiple backends. HashiCorp Vault offers cloud-hosted and self-hosted with open source + enterprise pricing and targets teams needing flexible, self-hosted secrets management with extensive plugin ecosystem.

Is HashiCorp Vault a good alternative to Pulumi ESC?

HashiCorp Vault stands out as an open-source alternative, while Pulumi ESC follows a per-user tiers pricing model. HashiCorp Vault offers self-hosted deployment for teams with strict data residency requirements, while Pulumi ESC is cloud-only. Ultimately, the right choice depends on your organization's specific requirements, compliance needs, and existing technology stack.

How does HashiCorp Vault pricing compare to Pulumi ESC?

Pulumi ESC pricing: Free tier; Team from $50/user/mo; Business from $90/user/mo (per-user tiers). HashiCorp Vault pricing: Free (OSS) / Enterprise from $0.03/hr (open source + enterprise). The best option depends on your team size, usage patterns, and whether you need cloud-hosted, self-hosted, or hybrid deployment.

Can I migrate from Pulumi ESC to HashiCorp Vault?

Migration from Pulumi ESC to HashiCorp Vault is possible and depends on your specific setup. Both platforms offer APIs that can facilitate data migration. Consider running both tools in parallel during transition to ensure continuity. Check each vendor's migration documentation for specific guidance.

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