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Technologies / Amazon Web Services / Castor

Companies using Amazon Web Services and Castor

2 companies in our data have public evidence for both Amazon Web Services and Castor, 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.

2companies use both
under 1%of Amazon Web Services users
100%of Castor 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

CompanyAmazon Web ServicesCastor
Cypress.ioCypress provides an open-source app and a cloud platform for testing web applications, including end-to-end, component, and API testing.
JWXjwx.comJWX provides technology platforms for video streaming, publishing, and advertising.Media and entertainment

The two technologies

Amazon Web Services

by Amazon · Cloud and infrastructure

Amazon Web Services is a cloud provider offering a broad set of on-demand computing, storage, database, analytics, and AI services. It is used to build, deploy, and scale applications and workloads in the cloud.

Summarized from aws.amazon.com on 8 Nov 2026.

under 1% of the 5,859 companies we see using Amazon Web Services also show the other.

All 5,859 companies using Amazon Web Services4,588 name it as a subprocessorMore in Cloud and infrastructure

Castor is an AI-native clinical trial platform that combines EDC, eCOA, eConsent, and data management in one platform. It is used to capture, manage, and review clinical trial and real-world evidence study data.

Summarized from castoredc.com on 8 Nov 2026.

100% of the 2 companies we see using Castor also show the other.

All 2 companies using Castor

Other pairs

Companies with their own evidence for both.

More with Amazon Web Services

Cloudflare5,649companiesGoogle Workspace4,213companiesGoogle Tag Manager2,721companiesGoogle Analytics2,336companiesGoogle2,205companiesStripe2,203companies

Questions

How many companies use both Amazon Web Services and Castor?

2 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 Amazon Web Services and Castor?

Cypress.io and JWX. Each one links to the evidence behind it.

How does StrataDB know a company uses Amazon Web Services and Castor?

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 Amazon Web Services and Castor

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
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