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Technologies / Twilio / User Testing

Companies using Twilio and User Testing

4 companies in our data have public evidence for both Twilio and User Testing, and 4 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.

4companies use both
under 1%of Twilio users
67%of User Testing users
4name 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

CompanyTwilioUser Testing
Checkrcheckr.comCheckr provides an AI-powered verification platform for background checks and identity verification.Compliance and riskHR and recruiting
Jeli Post-Incident Reviewsjeli.ioJeli provides collaborative incident learning tools that help teams analyze incidents and identify patterns across tools, teams, and time.
PagerDuty株式会社pagerduty.co.jpPagerDuty provides an operations platform that helps teams detect, respond to, resolve, and review incidents in IT systems, using AI and automation.Cloud and infrastructure
PagerDutypagerduty.comPagerDuty provides an AI-first platform for incident detection, investigation, and remediation, along with incident management and automation tools.AI and machine learning

The two technologies

Twilio

Email and communications

Twilio is a platform that connects communication channels, customer context, and AI. It is used to build engagement experiences across communication channels.

Summarized from twilio.com on 8 Nov 2026.

under 1% of the 1,238 companies we see using Twilio also show the other.

All 1,238 companies using Twilio1,057 name it as a subprocessorMore in Email and communications

User Testing

Analytics

User Testing is a human insight platform that lets companies get fast feedback from real people on apps, experiences, and content. It is used to help teams make decisions about what to build, validate designs before launch, and understand how customers see and use their products.

Summarized from usertesting.com on 8 Nov 2026.

67% of the 6 companies we see using User Testing also show the other.

All 6 companies using User Testing6 name it as a subprocessorMore in Analytics

Other pairs

Companies with their own evidence for both.

More with Twilio

Cloudflare1,231companiesGoogle Workspace880companiesAmazon Web Services847companiesStripe605companiesGoogle Tag Manager587companiesGoogle582companies

More with User Testing

Amazon Web Services6companiesCloudflare6companiesGoogle5companiesPendo5companiesSnowflake5companies

Questions

How many companies use both Twilio and User Testing?

4 companies in StrataDB's data have public evidence for both, and 4 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 Twilio and User Testing?

Checkr, Jeli Post-Incident Reviews, PagerDuty株式会社 and PagerDuty. Each one links to the evidence behind it.

How does StrataDB know a company uses Twilio and User Testing?

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 Twilio and User Testing

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