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Disclaimer: Star Stack provides information about European technology services for educational purposes only. Service listings, sovereignty assessments, and recommendations do not constitute legal, financial, or professional advice. We encourage you to verify all information independently and consult appropriate professionals before making technology decisions. Star Stack is not affiliated with any listed services unless explicitly stated.

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ButterCMS | Star Stack

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ButterCMS

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ButterCMS

Name: ButterCMS
Author: Star Stack

API-first headless CMS with built-in blogging and SEO

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About

ButterCMS is an API-first headless content management system that separates content from the frontend. It includes a built-in blogging engine and SEO tools for developers and marketers building websites, mobile apps, and ecommerce stores.

Resources

No migration guide is currently listed for this service.

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Sovereignty Score

Recorded assessment version: jurisdiction-ownership-2026-10-04

out of 100

Data completeness64% (Partial)

Jurisdictional(56%)

Significant foreign legal exposure risk

Jurisdiction: United States (EU adequacy decision)
Parent provider in United States (CLOUD Act risk) (Tiugo Technologies)
Five Eyes intelligence alliance exposure
US CLOUD Act applies (US can compel data access regardless of storage location)

Ownership(44%)

Significant foreign ownership or control risk

Mixed ownership (>30% non-EU)
Acquired by another company
Acquisition risk unknown (assumed high) (Submit verified data to improve this score)

More dimensions coming soon

GovernanceComing soon

PortabilityComing soon

LicenseComing soon

CommunityComing soon

How missing data affects scores Submit data corrections

Provider

ButterCMS

Quick Facts

Legal jurisdiction: United States
Headquarters: United States
Ownership: Mixed (>30% Non-EU)

Evidence and freshness

Verification date unknown. This assessment needs review.

A score is an assessment of recorded facts. Missing evidence and unresolved ownership can affect the result.

hqCountry: other
Retrieved 30/01/2026, confidence 95%.
Read evidence excerpt
ButterCMS headquarters located at 548 Market St 53079, San Francisco, California, 94104, United States
hqCountry: other
Retrieved 30/01/2026, confidence 95%.
Read evidence excerpt
ButterCMS headquarters located at 548 Market St 53079, San Francisco, California, 94104, United States
hqCountry: other
Retrieved 30/01/2026, confidence 95%.
Read evidence excerpt
ButterCMS headquarters located at 548 Market St 53079, San Francisco, California, 94104, United States
Ownership: other
Statement 12/02/2026, confidence 90%.
Read evidence notes
From enrichment pipeline 2026-02-06_03-32-59_c6_v20-validation