ClickHouse

clickhouse.com

ClickHouse declares 13 subprocessors, plus 4 of its own affiliates, in its subprocessor list, which we last checked on Nov 11, 2026 (evidence). They include Amazon Web Services, Google Cloud and Microsoft. No published changes since we first read it on Sep 22, 2026. 183 tracked vendors name ClickHouse as a subprocessor, including Salesforce, Twilio and SendGrid.

Includes: Langfuse

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

13 third parties, 4 affiliates.

NamePurposeLocationListed since
Amazon Web Services (AWS) Cloud hosting and infrastructure providerCustomer Selected
AWS Data ingestion pipeline; Querying of Customer Personal Data Customer has ingested into ClickHouse Cloud.United States of America, Germany, and Singapore; Various (locations here)
AWS Bedrock AIGenerative AI servicesUnited States of America, Germany, and Singapore
Azure Cloud hosting and infrastructure provider; Data ingestion pipelineCustomer Selected; Various (locations here)
GCP Data ingestion pipelineVarious (locations here)
Github, Inc. Support escalationsUnited States of America
Google LLC (Workspace) Email and office applicationsUnited States of America
Google Cloud Platform (GCP) Cloud hosting and infrastructure providerCustomer Selected
kapa.ai, Inc. Support deflection with AIUnited States of America
Langfuse GmbH Provision of technical services, support services, and supporting the provision, management and maintenance of the Cloud Services.Germany
Pylon Labs, Inc. Customer support chat platformUnited States of America
Salesforce, Inc. Customer support case management, messaging services (Slack)United States of America
Waypoint Tech Inc. Support knowledge managementUnited States of America
ClickHouse affiliates (4)
NamePurposeLocationListed since
ClickHouse, Inc. Provision of technical services, support services, and supporting the provision, management and maintenance of the Cloud Services.Germany; Japan; Singapore; The Netherlands; United States of America
ClickHouse Australia Pty Ltd Provision of technical services, support services, and supporting the provision, management and maintenance of the Cloud Services.Australia
ClickHouse India Private Limited Provision of technical services, support services, and supporting the provision, management and maintenance of the Cloud Services.India
ClickHouse UK Co. Ltd. Provision of technical services, support services, and supporting the provision, management and maintenance of the Cloud Services.United Kingdom

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

ClickHouse's homepage made 410 requests to 28 domains, 14 services controlled by another company, and 1 domain not identified.

Advertising (4): Google Cloud, X Corp., Spotify AB, Reddit, Inc.Analytics (4): Reo.Dev, LinkedIn, Meta, UnifyMarketing automation (3): Clearbit, Conversion, AdobeA/B Testing (1): GrowthBookOther (2): SEO: Ahrefs; Security: Securiti

14 third parties by category: Advertising 4Analytics 4Marketing automation 3A/B Testing 1Other 2

Third parties 14 · 55 requests
Google Cloudsubprocessor DoubleClick Floodlight Google Tag Manager 2% of the page's requests 9
Securiti Securiti 2% of the page's requests 9
Reo.Dev Reo.Dev 1% of the page's requests 5
X Corp. Twitter Ads 1% of the page's requests 5
Clearbit Clearbit <1% of the page's requests 4
Conversion Conversion <1% of the page's requests 4
Adobe Marketo <1% of the page's requests 3
LinkedIn Linkedin Insight Tag <1% of the page's requests 3
Meta Facebook Pixel 2.9.433 <1% of the page's requests 3
Spotify AB Spotify Pixel <1% of the page's requests 3
GrowthBook GrowthBook <1% of the page's requests 2
Reddit, Inc. Reddit Ads <1% of the page's requests 2
Unify Unify <1% of the page's requests 2
Ahrefs Ahrefs <1% of the page's requests 1
Unknown 1 · 2 requests

cr-relay.com

First party 1 · 353 requests
ClickHouse Cloudflare Framer Motion Google Analytics HSTS HTTP/3 Linkedin Ads Lucide Next.js 16.3.3 Next.js App Router Open Graph PWA Priority Hints React Swiper Turbopack Vercel Webpack core-js 3.32.2 86% of the page's requests 353

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

Subprocessor of (183)CSV of the companies listing ClickHouse · Atom feed of the companies listing ClickHouse

1–50 of 183
  • Aaru aaru.com Analytics data store; Data storage and processing
  • Abusix abusix.com Analytics database; Managed analytics database for threat intelligence and service data.
  • Acrolinx acrolinx.com Database as a service
  • Ada Support ada.cx Analytics
  • Adaptive Security adaptivesecurity.com Data Warehouse; Data warehouse and analytics database for large-scale data processing.
  • AirCall aircall.io Data analytics and data processing services. ClickHouse provides database and data processing infrastructure used to analyze platform metrics and operational usage data.
  • Alguna alguna.com Usage metering data warehouse
  • Ambition ambition.com Analytics
  • Ampersand ampersand.ai Data storage and analytics; Stores integration run data, logs, and analytics used to operate and monitor Ampersand's services.
  • Appcues appcues.com Provides managed database services.
  • Applied Compute appliedcompute.com Analytics database
  • Arcade arcade.software Data and analytics; Storage and querying of product and viewer event data used to operate, measure, and support the Services.
  • Ashby ashbyhq.com Analytics
  • Attention attention.com Data storage & analytics
  • Avoma avoma.com Analytics
  • b.well Connected Health icanbwell.com Database
  • Beyond Work beyondwork.ai Event log storage, one database per tenant
  • BigPanda bigpanda.io Cloud Service Provider: Used to support high-speed storage and querying of operational; data flowing into BigPanda’s AI Detection and Response capabilities, enabling BigPanda to; deliver enhanced detection accuracy and faster contextual insights across the platform.
  • Bird bird.com Analytics Data Base Service Provider; Analytics Database Service Provider
  • Blacksmith blacksmith.sh Observability and analytics database hosting
  • Braze braze.com A managed database provider that hosts analytical data to enable statistical and diagnostic reporting, products and features.
  • Browserbase browserbase.com Data storage, processing, and analytics infrastructure; Provides data storage, processing, and analytics infrastructure used in connection with certain Browserbase services.
  • Buildkite buildkite.com Column-oriented database management system; Database management
  • Cerbos cerbos.dev
  • Cerebrium cerebrium.ai Application logs and usage analytics; Database Provider
  • Chameleon Intelligent Tech chameleon.io Data Warehouse
  • ChargeBee chargebee.com Database analytics provider: It is used for tracking product consumption information and serving as a storage layer and aggregator of usage events. It is used in the delivery of the usage-based billing (UBB) capability.
  • Check Point Software Technologies checkpoint.com Event logging and operational monitoring
  • CircleCI circleci.com Data storage and analytics
  • Clarify clarify.ai Data Warehouse
  • Clay clay.com Database
  • Clerk clerk.com Clerk uses ClickHouse Cloud for storage and processing of analytical workloads, and fraud analysis.
  • Clever clever.com Log processing and Cloud hosted database
  • Common Room commonroom.io Structured data storage and querying
  • Composio composio.dev Stores trigger logs, delivery callbacks, tool/metering usage logs.
  • Confident AI confident-ai.com Data storage
  • CookieYes cookieyes.com Pageview calculations, billing
  • Courier courier.com Analytics
  • Crossdeck cross-deck.com Analytical aggregation of event data — time-series queries, funnels, retention cohorts, custom-event breakdowns. Customer-side dashboard queries route through ClickHouse for read performance.
  • Culture Amp cultureamp.com ClickHouse is an analytical database provider used to power product reporting and insights features. It stores survey responses, performance data, and employee data records to enable real-time analytics queries.
  • Day AI day.ai Database platform
  • Decagon decagon.ai Online analytics database for insights dashboard and analytics
  • DoiT doit.com Cloud data warehouse and analytics platform
  • Drivetrain drivetrain.ai
  • Expel expel.com Cloud data analytics (security, operations, business intelligence)
  • Expo expo.dev analytics services
  • Fathom Analytics usefathom.com Analytics database hosting
  • Fillout fillout.com
  • Fly.io fly.io Audit log storage for control plane API requests
  • Frill frill.co Real-time database and analytics
  • Show next 50

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

Certified
Says it complies with

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

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

Aug 14: 1 incident (1 minor)Aug 15: no incident reportedAug 16: no incident reportedAug 17: 1 incident (1 minor)Aug 18: no incident reportedAug 19: no incident reportedAug 20: no incident reportedAug 21: no incident reportedAug 22: no incident reportedAug 23: 1 incident (1 minor)Aug 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: 1 incident (1 no impact stated)Sep 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: 1 incident (1 minor)Sep 15: 1 incident (1 minor)Sep 16: 1 incident (1 minor)Sep 17: no incident reportedSep 18: no incident reportedSep 19: no incident reportedSep 20: no incident reportedSep 21: no incident reportedSep 22: 1 incident (1 minor)Sep 23: 1 incident (1 minor)Sep 24: 2 incidents (2 minor)Sep 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: 1 incident (1 no impact stated)Oct 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: 1 incident (1 minor)Oct 21: no incident reportedOct 22: no incident reportedOct 23: 1 incident (1 minor)Oct 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: 1 incident (1 minor)Nov 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: 1 incident (1 minor)

90 days agotoday

  • 16 incidents in 90 days
  • 0 major or critical
  • 49 min typical time to resolve
BeganIncidentImpactLasted
Provisioning and scaling operations may take longer in AWS ap-northeast-1 Tokyominorongoing
SQL Console database connection outageminor49 min
Degraded support ticket submission and responseminor2 h 47 min
Google Cloud Outageminor6 h 44 min
Support case creation unavailableno impact stated30 min
Streaming ClickPipes degradation in AWS eu-central-1 regionminor29 min
Some ClickPipes CDC pipes paused and can't be resumedminor33 min
We are investigating an issue affecting Azure eastus2 regionminor30 min

Incidents per month

0 4 8 May 2026: 5 incidents (5 minor) · partial: our history begins May 8 · typical time to resolve 31 h 2 min Jun 2026: 2 incidents (2 minor) · typical time to resolve 5 h 7 min Jul 2026: 6 incidents (1 critical, 1 major, 3 minor, 1 no impact stated) · typical time to resolve 2 h 29 min Aug 2026: 4 incidents (4 minor) · typical time to resolve 1 h 53 min Sep 2026: 8 incidents (7 minor, 1 no impact stated) · typical time to resolve 3 h 59 min Oct 2026: 3 incidents (2 minor, 1 no impact stated) · typical time to resolve 2 h 47 min Nov 2026: 2 incidents (2 minor) · typical time to resolve 49 min May 2026Jun Jul Aug Sep Oct Nov

critical major minor no impact stated before or partly before our history

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

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

41 reported incidents in the last 30 days, by 3 of the vendors ClickHouse lists as subprocessors.

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

DateCompanyIncidentImpactLasted
GitHubImpact across multiple GitHub products including Actions, Pages, and Copilot products. critical33 min
GitHubIncident with Webhooks minor4 min
PylonSlack Integration Connection Issues major3 h 13 min
GitHubIncident with Git Operations and Pull Requests critical1 h 44 min
GitHubDegraded availability for GPT-5.3 Codex and GPT-5.6 models in Copilot major49 min
GitHubIncident with Actions and Checks API critical46 min
GitHubIncident with Webhooks and Actions major1 h 50 min
GitHubIncreased timeouts due to surge in anonymous users minor3 h 10 min
GitHubIncrease in timeouts for some unauthenticated users minor1 h 56 min
GitHubDegraded performance for multiple GitHub services minor44 min
GitHubIncident with Actions minor52 min
PylonDelay in Analytics Data minor3 h 16 min
GitHubIncident with Actions major35 min
GitHubIncident with Actions and Pages major55 min
PylonInbound Email Delays minor1 h 17 min
GitHubIncident with Pull Requests, Git Operations and Issues major2 h
GitHubIncreased task-related errors for Copilot Mission Control minor1 h 16 min
GitHubIncident with Git Operations minor1 h 43 min
GitHubIncident with API, Git, and Copilot requests minor30 min
GitHubElevated errors on GPT-5.4 Nano minor38 min
GitHubIncident with Dependabot minor2 h 29 min
GitHubIncident with Actions, Pages, and Webhooks major1 h 32 min
GitHubDisruption with GitHub services critical31 min
GitHubDisruption with Copilot Cloud services minor2 h 29 min
GitHubDisruption with some Copilot services critical1 h 15 min

And 16 more. All of them: CSV · Who is around them.

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

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

None since tracking began.

Rating badge for ClickHouse's site

ClickHouse transparency rating

It updates with the rating.

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