# What does CLSI use?

CLSI (clsi.org) shows public evidence of 18 tools, according to runsonwhat (last checked 2026-11-04).

- Based in: Berwyn, United States
- LinkedIn: https://www.linkedin.com/company/clinical-and-laboratory-standards-institue

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Custom domain, DNS records, Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code |  |
| [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code |  |
| [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Custom domain, Email records, Website code |  |
| [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records |  |
| [HubSpot CMS](https://www.runsonwhat.com/reverse/hubspot-cms) | Website & CMS | Custom domain |  |
| [Quantcast](https://www.runsonwhat.com/reverse/quantcast) | Ads & Pixels | Website code |  |
| [Simpli.fi](https://www.runsonwhat.com/reverse/simplifi) | Ads & Pixels | Website code |  |
| [Act-On](https://www.runsonwhat.com/reverse/act-on) | Marketing | Custom domain |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [Valimail](https://www.runsonwhat.com/reverse/valimail) | Security & Compliance | Email records |  |
| [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records |  |
| [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records |  |
| [Smartsheet](https://www.runsonwhat.com/reverse/smartsheet) | Collaboration | DNS verification records |  |

## FAQ

### What tools does CLSI use?

As of November 2026, runsonwhat has found 18 tools at CLSI (clsi.org) in public records. Edge & Hosting: Microsoft Azure. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, LinkedIn Insight Tag and HubSpot. Company Ops: Microsoft 365, Apple Business and Valimail. Last checked November 4, 2026.

### What cloud does CLSI run on?

CLSI uses Microsoft Azure for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Microsoft Azure through a subdomain that points at Microsoft Azure and DNS records. Microsoft Azure is used by 49,643 companies runsonwhat tracks.

### What CRM does CLSI use?

CLSI uses HubSpot for its CRM, according to runsonwhat (November 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and email records. HubSpot is used by 96,985 companies runsonwhat tracks.

### What email provider does CLSI use?

CLSI uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 725,760 companies runsonwhat tracks.

### What does CLSI use for customer support?

CLSI uses Zendesk for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found Zendesk through email records that authorize Zendesk. Zendesk is used by 43,262 companies runsonwhat tracks.

### What analytics tools does CLSI use?

CLSI uses Google Analytics for analytics, alongside Google Tag Manager and Microsoft Clarity, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on clsi.org. Google Analytics is used by 905,939 companies runsonwhat tracks.

### Does CLSI use Google Ads?

Yes. runsonwhat found Google Ads at CLSI through Google Ads code on clsi.org. Google Ads is a Ads & Pixels tool used by 541,016 companies runsonwhat tracks.

### Which companies have a tech stack similar to CLSI's?

The companies with the stacks most like CLSI's are TruBridge, Wittkieffer, Precision Effect - London and Wilmington and Beaches Convention & Visitors Bureau, according to runsonwhat (November 2026). Each shares 3 to 9 tools with CLSI, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what CLSI uses?

runsonwhat reads public records only. Of the 18 tools at CLSI, 7 were found through code on clsi.org, 4 through email records, 4 through subdomains that point at the vendor and 3 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and clsi.org about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/clsi.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.