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Technologies / Castle.io / Google Cloud

Companies using Castle.io and Google Cloud

3 companies in our data have public evidence for both Castle.io and Google Cloud, and 2 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

3companies use both
75%of Castle.io users
under 1%of Google Cloud users
2name both as subprocessors

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyCastle.ioGoogle Cloud
Docwizedocwize.comDocwize provides document management and workflow automation software for legal, finance, construction, HR, and operations teams.Legal
lovable.dev
GitBookgitbook.comGitBook is a documentation platform that flags outdated content and fixes it.Developer tools

The two technologies

Castle.io

Security and identity

Castle.io is a suite of APIs for bot detection and abuse prevention. It is used to stop bots and fraud through behavioral analysis.

Summarized from docs.castle.io on 8 Nov 2026.

75% of the 4 companies we see using Castle.io also show the other.

All 4 companies using Castle.ioMore in Security and identity

Google Cloud

by Google · Cloud and infrastructure

Google Cloud is a cloud platform offering computing, storage, databases, data analytics, networking, developer tools, security, and AI and machine learning services. It is used by businesses and developers to build, deploy, scale, and secure applications and to store and analyze data.

Summarized from cloud.google.com on 8 Nov 2026.

under 1% of the 2,397 companies we see using Google Cloud also show the other.

All 2,397 companies using Google Cloud1,738 name it as a subprocessorMore in Cloud and infrastructure

Other pairs

Companies with their own evidence for both.

More with Google Cloud

Cloudflare2,262companiesGoogle Workspace1,891companiesAmazon Web Services1,326companiesGoogle Tag Manager1,044companiesGoogle Analytics920companiesOpenAI917companies

Questions

How many companies use both Castle.io and Google Cloud?

3 companies in StrataDB's data have public evidence for both, and 2 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Castle.io and Google Cloud?

Docwize, lovable.dev and GitBook. Each one links to the evidence behind it.

How does StrataDB know a company uses Castle.io and Google Cloud?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Castle.io and Google Cloud

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call