GrowthBook

growthbook.io

GrowthBook declares 7 subprocessors in its subprocessor list, which we last checked on Nov 11, 2026 (evidence). They include Amazon Web Services, OpenAI and Anthropic. No published changes since we first read it on Oct 31, 2026. 5 tracked vendors name GrowthBook as a subprocessor, including xAI, Kudoboard and Civic Roundtable.

Subprocessors CSV of GrowthBook's subprocessors · Atom feed of GrowthBook's subprocessors DORA draft CSV of GrowthBook's subprocessors as declared by GrowthBook what's this? · 

7 third parties.

NamePurposeLocationListed since
Amazon Web Services, Inc. Cloud hosting providerUnited States
Claude (Anthropic) AIAI services providerUnited States
ClickHouse, Inc. Data storage and processingUnited States
Fastly, Inc. CDNGlobal
MongoDB, Inc. Data storage and processingUnited States
OpenAI AIAI services providerUnited States
SendGrid (Twilio Inc.) Communications technology providerUnited States

Web TechnologiesCSV of GrowthBook's web technologies · Atom feed of GrowthBook's web technologies

GrowthBook's homepage made 215 requests to 35 domains, 16 services controlled by another company, and 2 domains not identified.

Analytics (6): HubSpot, Reo.Dev, LinkedIn, Leadfeeder; usually detected as Analytics: Cloudflare, Plausible AnalyticsAdvertising (3): Google Cloud, Sovrn, Reddit, Inc.CDN (2): jsDelivr, UNPKGCookie compliance (1): CookiebotOther (4): reviewed as Development: GitHub; Form builders: Default; JavaScript libraries: Webflow; Security: ClickCease™

16 third parties by category: Analytics 6Advertising 3CDN 2Cookie compliance 1Other 4

Third parties 16 · 203 requests
Google Cloud DoubleClick Floodlight Google Analytics Google Tag Manager 26% of the page's requests 55
Webflow Webflow 1.6.0 jQuery 3.5.1 26% of the page's requests 55
jsDelivr jsDelivr 14% of the page's requests 30
HubSpot HubSpot HubSpot Analytics HubSpot Chat 12% of the page's requests 26
Cookiebot Cookiebot 2 3% of the page's requests 6
Default Default (default.com) 3% of the page's requests 6
Sovrn Sovrn 3% of the page's requests 6
Reo.Dev Reo.Dev 2% of the page's requests 5
LinkedIn Linkedin Insight Tag 1% of the page's requests 3
Reddit, Inc. Reddit Ads 1% of the page's requests 3
Cloudflare cloudflare.com <1% of the page's requests 2
Leadfeeder Leadfeeder <1% of the page's requests 2
ClickCease™ ClickCease <1% of the page's requests 1
GitHub github.com <1% of the page's requests 1
Plausible Analytics plausible.io <1% of the page's requests 1
UNPKG Unpkg <1% of the page's requests 1
Unknown 2 · 3 requests

sitelytics.techusbrowserspeed.com

First party 1 · 9 requests
GrowthBook Cloudflare Cloudflare Turnstile Finsweet GSAP 3.15.0 GrowthBook 2.0.0 HSTS HTTP/3 Lenis 1.3.17 LottieFiles Open Graph Plausible Priority Hints Swiper Webpack 4% of the page's requests 9

13 tracked companies loaded by the homepage are not in GrowthBook's subprocessor list. A website can use a service without it processing customer data.

Subprocessor of (5)CSV of the companies listing GrowthBook · Atom feed of the companies listing GrowthBook

5 companies
  • Civic Roundtable civicroundtable.com Feature delivery; Manages controlled feature rollouts and service configuration
  • Iconik iconik.io Growthbook is used for
  • Kudoboard kudoboard.com for in-product A/B testing [Headquartered at 1950 W Corporate Way 34560, Anaheim, California, 92801]
  • Tailor AI tailorhq.ai Product Analytics & Infrastructure
  • xAI x.ai Services and support

ComplianceCSV of GrowthBook's compliance · Atom feed of GrowthBook's compliance

Certified
Says it complies with

Certifications as GrowthBook's trust center lists them; reports are usually shared on request (evidence)

Service statusCSV of GrowthBook's status page incidents · Atom feed of GrowthBook's status page incidents

Aug 15: no incident reportedAug 16: no incident reportedAug 17: no incident reportedAug 18: no incident reportedAug 19: no incident reportedAug 20: no incident reportedAug 21: no incident reportedAug 22: no incident reportedAug 23: no incident reportedAug 24: no incident reportedAug 25: no incident reportedAug 26: no incident reportedAug 27: no incident reportedAug 28: no incident reportedAug 29: no incident reportedAug 30: no incident reportedAug 31: no incident reportedSep 1: no incident reportedSep 2: no incident reportedSep 3: no incident reportedSep 4: no incident reportedSep 5: no incident reportedSep 6: no incident reportedSep 7: no incident reportedSep 8: no incident reportedSep 9: no incident reportedSep 10: no incident reportedSep 11: no incident reportedSep 12: no incident reportedSep 13: no incident reportedSep 14: no incident reportedSep 15: no incident reportedSep 16: no incident reportedSep 17: no incident reportedSep 18: no incident reportedSep 19: no incident reportedSep 20: no incident reportedSep 21: no incident reportedSep 22: no incident reportedSep 23: no incident reportedSep 24: no incident reportedSep 25: no incident reportedSep 26: no incident reportedSep 27: no incident reportedSep 28: no incident reportedSep 29: no incident reportedSep 30: no incident reportedOct 1: no incident reportedOct 2: no incident reportedOct 3: no incident reportedOct 4: no incident reportedOct 5: no incident reportedOct 6: no incident reportedOct 7: no incident reportedOct 8: no incident reportedOct 9: no incident reportedOct 10: no incident reportedOct 11: no incident reportedOct 12: no incident reportedOct 13: no incident reportedOct 14: no incident reportedOct 15: no incident reportedOct 16: no incident reportedOct 17: no incident reportedOct 18: no incident reportedOct 19: no incident reportedOct 20: no incident reportedOct 21: no incident reportedOct 22: no incident reportedOct 23: no incident reportedOct 24: no incident reportedOct 25: no incident reportedOct 26: no incident reportedOct 27: no incident reportedOct 28: no incident reportedOct 29: no incident reportedOct 30: no incident reportedOct 31: no incident reportedNov 1: no incident reportedNov 2: no incident reportedNov 3: no incident reportedNov 4: no incident reportedNov 5: no incident reportedNov 6: no incident reportedNov 7: no incident reportedNov 8: no incident reportedNov 9: no incident reportedNov 10: no incident reportedNov 11: no incident reportedNov 12: no incident reported

90 days agotoday

No incidents reported in the last 12 months The last it reported began : We are experiencing issues with our auth provider on GrowthBook Cloud

As GrowthBook's status page reports its own incidents (scheduled maintenance left out), read every few hours since (evidence)

Incidents reported by GrowthBook's subprocessorsCSV of incidents reported by vendors GrowthBook lists · Atom feed of incidents reported by vendors GrowthBook lists

237 reported incidents in the last 30 days, by 5 of the vendors GrowthBook lists as subprocessors.

A subprocessor list names a company, not the service an incident touched. This does not show that GrowthBook was involved.

DateCompanyIncidentImpactLasted
SendGridSMS Delivery Failures From Long Code Numbers to AT&T in the US minorongoing
SendGridSMS Delivery Delays from Twilio to MTS Kazakhstan minorongoing
SendGridSMS Delivery Failures from a Subset of Twilio Phone Numbers to Tcell Tajikistan minorongoing
OpenAIUnable to start new Workspace Agent runs criticalongoing
SendGridMMS Delivery Delays from a Subset of Twilio Long Codes to Multiple Small Networks in United States minorongoing
SendGridSMS Delivery Failures from a Subset of Twilio Phone Numbers to K-Cell Kazakhstan minorongoing
OpenAIElevated errors affecting logins, sign-ups, and ChatGPT features minor8 min
SendGridVoice Call Failures in JP1 minor3 h 51 min
ClickHouseProvisioning and scaling operations may take longer in AWS ap-northeast-1 Tokyo minor7 h 38 min
SendGridSMS Delivery Failures from Twilio to Turkcell Turkey minor3 h 54 min
SendGridRetroactive Incident Impacting Twilio Usage APIs no impact stated1 min
AnthropicElevated errors on Fable 52 and Mythos 52 no impact stated1 min
SendGridIssue resolved minor1 h 43 min
SendGridSMS Delivery Receipt Delays from Twilio Phone Numbers to Movistar Venezuela minor3 h 26 min
SendGridGateway API (Lookup API) Failure Increase on Verizon in United States minor10 h 23 min
OpenAIIncorrect cost data in Costs API exports no impact stated2 h 20 min
OpenAIElevated Errors On API minor42 min
SendGridWhatsApp Business API Message Send Failures minor16 h 29 min
OpenAIElevated ChatGPT Conversation Errors minor52 min
SendGridVoice Call Failures from a Subset of Twilio Phone Numbers to Chile minor19 h 20 min
SendGridVoice Call Audio Quality Degradation, Silent and One-Way Audio between Twilio and Multiple Networks in United Kingdom minor5 h 18 min
SendGridSMS Delivery Delays and Failures from a Subset of Twilio Alphanumeric Sender IDs and Long Codes to Multiple Networks in Italy minor3 h 14 min
SendGridSMS Delivery Delays and Failures from Twilio to Spusu United Kingdom minor3 h 26 min
SendGridSMS Delivery Receipt Delays from Twilio to Bouygues Telecom France minor13 h 31 min
SendGridSMS Delivery Failures from Network Subscribers in Germany to a Subset of Twilio Long Codes minor8 h 40 min

And 212 more. All of them: CSV · Who is around them.

ChangesCSV of GrowthBook's changes · Atom feed of GrowthBook's changes

See the list as we read it on any date: Time machine

None since tracking began.

Rating badge for GrowthBook's site

GrowthBook transparency rating

It updates with the rating.

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