# What does EF Standard English Test use?

EF Standard English Test (efset.org) shows public evidence of 17 tools, according to runsonwhat (last checked 2026-11-02).

- LinkedIn: https://www.linkedin.com/company/efset

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records |  |
| [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Custom domain, Website code |  |
| [Akamai](https://www.runsonwhat.com/reverse/akamai) | CDN & Edge | Custom domain |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code |  |
| [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code |  |
| [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records |  |
| [Storyblok](https://www.runsonwhat.com/reverse/storyblok) | Website & CMS | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records |  |
| [Red Sift OnDMARC](https://www.runsonwhat.com/reverse/redsift) | Security & Compliance | Email records |  |
| [Detectify](https://www.runsonwhat.com/reverse/detectify) | Security & Compliance | DNS verification records |  |

## FAQ

### What tools does EF Standard English Test use?

As of November 2026, runsonwhat has found 17 tools at EF Standard English Test (efset.org) in public records. Edge & Hosting: Amazon Route 53, Amazon CloudFront and Akamai. Application: YouTube and Next.js. Data & Observability: Google Analytics and Hotjar. Go-to-market: Google Ads, Meta Pixel and LinkedIn Insight Tag. Company Ops: Microsoft 365, SendGrid and Red Sift OnDMARC. Last checked November 2, 2026.

### What email provider does EF Standard English Test use?

EF Standard English Test uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 720,762 companies runsonwhat tracks.

### What analytics tools does EF Standard English Test use?

EF Standard English Test uses Google Analytics for analytics, alongside Hotjar, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on efset.org. Google Analytics is used by 906,063 companies runsonwhat tracks.

### What is EF Standard English Test's website built with?

EF Standard English Test uses Storyblok for its website, according to runsonwhat (November 2026). runsonwhat found Storyblok through Storyblok code on efset.org. Storyblok is used by 2,775 companies runsonwhat tracks.

### What marketing software does EF Standard English Test use?

EF Standard English Test uses Mailchimp for marketing, according to runsonwhat (November 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 117,846 companies runsonwhat tracks.

### Does EF Standard English Test use Google Ads?

Yes. runsonwhat found Google Ads at EF Standard English Test through Google Ads code on efset.org. Google Ads is a Ads & Pixels tool used by 541,786 companies runsonwhat tracks.

### Which companies have a tech stack similar to EF Standard English Test's?

The companies with the stacks most like EF Standard English Test's are Wink, Fathom, Plus54 and Sedex, according to runsonwhat (November 2026). Each shares 2 to 11 tools with EF Standard English Test, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what EF Standard English Test uses?

runsonwhat reads public records only. Of the 17 tools at EF Standard English Test, 8 were found through code on efset.org, 4 through DNS records, 3 through email records and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and efset.org about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/efset.org (updated November 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.