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Government · head to head

AWS GovCloud vs Sigstore

AWS GovCloud logo

AWS GovCloud

Government

Secure Cloud for Government

From
On request
Free plan
No
Full reviewWebsite
Sigstore logo

Sigstore

Cybersecurity

Free public signing and transparency infrastructure for open source artifacts

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Sigstore has a free tier, so it costs nothing to try first.
  • Each has a real cost: AWS GovCloud access is restricted to vetted US entities, with account holders screened for US citizenship or permanent residency; Sigstore the security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • They diverge on capability: AWS GovCloud covers FedRAMP High Authorized, Sigstore covers Fulcio.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which AWS GovCloud and Sigstore actually diverge.

Attributes where AWS GovCloud and Sigstore differ
AttributeAWS GovCloudSigstore
Starting priceOn requestFree
Pricing modelusage-basedOpen source, public instance free to use
Free tierNoYes
PlatformsWeb, Cli, SdkWeb, Linux, macOS, Windows, Self-hosted
CategoryGovernmentCybersecurity
Founded2006Unknown

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in AWS GovCloud

  • FedRAMP High Authorized
  • ITAR Compliant
  • DOD SRG Levels
  • Isolated Infrastructure
  • Full AWS Services
  • Third-party Tools
  • Government Systems
  • Security Tools

Only in Sigstore

  • Fulcio
  • Rekor
  • Keyless signing
  • Multi-language clients
  • Timestamp authority
  • Neutral governance

What people use each for

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

AWS GovCloud

  • Hosting controlled unclassified information for US federal agenciesnot Sigstore
  • Workloads requiring FedRAMP High, ITAR or DFARS compliancenot Sigstore
  • Defence and public sector systems needing US-person operationnot Sigstore
  • Regulated contractors handling government datanot Sigstore

Sigstore

  • Open source projects signing releases without running a certificate authoritynot AWS GovCloud
  • Organisations meeting a signed-artifact requirement without buying a signing productnot AWS GovCloud
  • Publishing provenance that a consumer can verify independently of younot AWS GovCloud
  • Self-hosting the same components where a public log is unacceptablenot AWS GovCloud

Where each one falls short

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

AWS GovCloud

  • Access is restricted to vetted US entities, with account holders screened for US citizenship or permanent residency
  • Separate IAM, console, CLI and APIs from commercial AWS, so accounts and tooling do not carry across
  • Not every AWS service is available in the two GovCloud regions
  • Pricing is not published on the product page

Sigstore

  • The security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • It is a 99.5 percent objective with no service level agreement, which permits several hours of downtime a month and offers no remedy. A pipeline that signs on every build has taken a hard dependency on a free service with no contract behind it.
  • Log scale is a live engineering problem rather than a theoretical one. The active shard holds billions of entries, the log has already been sharded twice, and sharding version 1 requires stopping traffic, which is why a replacement was built.
  • Ten-minute certificates make trust depend on log availability. Verifying an older signature relies on the log entry proving it was made inside that window, so a lost or unreachable entry can render a valid artifact unverifiable.
  • Migration debt is substantial and ongoing. Version 2 of the log is generally available but not the public default, the signing client has an announced breaking release ahead, some official clients lag the new log format, and a post-quantum migration is named as the next break after that.

Pricing, plan by plan

AWS GovCloud

On request
  • Pay-as-you-goFree
    • Compute
    • Storage
    • Database

Sigstore

Free
  • Public good instanceFree
    • Free to everyone with no contract
    • 99.5 percent availability objective, not an agreement
    • 100KB cap per attestation upload
  • Self-hostedFree
    • Apache-2.0
    • Run your own Fulcio and Rekor
    • Rekor v2 available for self-hosters

Which should you pick?

Choose AWS GovCloud if

  • You need fedramp high authorized.
  • You work on Web, Cli, Sdk.
  • You also want itar compliant.
AWS GovCloud review

Choose Sigstore if

  • You need fulcio.
  • You want to start without paying.
  • You work on Web, Linux, macOS, Windows, Self-hosted.
  • You also want rekor.
Sigstore review

Questions people ask

Is AWS GovCloud or Sigstore better?
Neither clearly leads. AWS GovCloud starts at On request and Sigstore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AWS GovCloud or Sigstore?
Sigstore has a free tier; the other does not. Paid plans start at On request for AWS GovCloud and Free for Sigstore.
Does AWS GovCloud or Sigstore run on more platforms?
AWS GovCloud runs on Web, Cli, Sdk. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
Can I use Sigstore for free?
Yes. Sigstore has a free tier, so you can try it without paying. AWS GovCloud starts at On request.
What is AWS GovCloud best used for?
AWS GovCloud is most often used for hosting controlled unclassified information for us federal agencies, workloads requiring fedramp high, itar or dfars compliance, defence and public sector systems needing us-person operation, regulated contractors handling government data. Of those, hosting controlled unclassified information for us federal agencies and workloads requiring fedramp high, itar or dfars compliance are not what Sigstore is typically brought in for.
What can AWS GovCloud do that Sigstore cannot?
AWS GovCloud covers FedRAMP High Authorized, ITAR Compliant, DOD SRG Levels, Isolated Infrastructure. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

AWS GovCloud: Is AWS GovCloud pricing different from standard AWS?

The page does not disclose specific pricing for AWS GovCloud (US). It mentions 'AWS Savings Plans' as a flexible pricing model but provides no actual costs. Users must contact AWS directly via the 'Contact us' link or visit AWS pricing calculators for estimates.

Source
Sigstore: Is the public instance really free?

Yes, with no contract and no paid tier. That is also the weakness: a 99.5 percent objective with no agreement, no remedy and support through Slack.

AWS GovCloud: Who is eligible to use AWS GovCloud?

AWS GovCloud (US) is restricted to verified U.S. government agencies and entities meeting specific screening requirements. Commercial organizations and individual users cannot use this service.

Source
Sigstore: Has the public log moved to Rekor v2?

No. Version 2 reached general availability in October 2025 and self-hosters can use it, but the public instance still defaults to version 1 and the project has said it will for the foreseeable future.

AWS GovCloud: Can I try AWS GovCloud before committing to a contract?

The page does not disclose whether a free trial or evaluation period is available for AWS GovCloud. Pricing and trial information would need to be obtained by contacting AWS directly.

Source
Sigstore: Does Sigstore make my dependencies safe?

No, and this is a category error worth avoiding. It tells you who published something. It has no knowledge of what the artifact contains or whether it is vulnerable.

Sigstore: What are the rate limits?

Not published. Only the 100KB cap per attestation upload is documented, so do not design a high-volume pipeline around assumed throughput.

Sigstore: Should we self-host it?

If a public record of every signature is unacceptable, or if a free service with no agreement cannot sit in your build path, then yes. Otherwise the public instance is what most projects use.

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Related pages

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