# What does Microsoft use?

Microsoft (xandr.com) shows public evidence of 17 tools, according to runsonwhat (last checked 2026-10-10).

- Industry: Advertising
- Size: 1,001–5,000 employees
- Based in: Redmond, United States
- Founded: 2018
- LinkedIn: https://www.linkedin.com/company/microsoft-advertising

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Custom domain |  |
| [Fastly](https://www.runsonwhat.com/reverse/fastly) | CDN & Edge | Website code |  |
| [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Website code |  |

## Data & Observability

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

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code |  |
| [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code |  |
| [TikTok Pixel](https://www.runsonwhat.com/reverse/tiktok-pixel) | Ads & Pixels | Website code |  |
| [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Custom domain |  |
| [Marketo](https://www.runsonwhat.com/reverse/marketo) | Marketing | Custom domain, Email records |  |
| [LivePerson](https://www.runsonwhat.com/reverse/liveperson) | Support & Docs | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records |  |
| [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records |  |
| [Webex](https://www.runsonwhat.com/reverse/webex) | Collaboration | DNS verification records |  |
| [Smartsheet](https://www.runsonwhat.com/reverse/smartsheet) | Collaboration | DNS verification records |  |

## FAQ

### What tools does Microsoft use?

As of October 2026, runsonwhat has found 17 tools at Microsoft (xandr.com) in public records. Edge & Hosting: Cloudflare, Fastly and Microsoft Azure. Data & Observability: Microsoft Clarity. Go-to-market: Microsoft Ads, LinkedIn Insight Tag and TikTok Pixel. Company Ops: Microsoft 365, Apple Business and Atlassian. Last checked October 10, 2026.

### What cloud does Microsoft run on?

Microsoft uses Microsoft Azure for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Microsoft Azure through Microsoft Azure code on xandr.com. Microsoft Azure is used by 45,294 companies runsonwhat tracks.

### What CRM does Microsoft use?

Microsoft uses Salesforce for its CRM, according to runsonwhat (October 2026). runsonwhat found Salesforce through a subdomain that points at Salesforce. Salesforce is used by 33,410 companies runsonwhat tracks.

### What email provider does Microsoft use?

Microsoft uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 700,620 companies runsonwhat tracks.

### What does Microsoft use for customer support?

Microsoft uses LivePerson for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found LivePerson through LivePerson code on xandr.com. LivePerson is used by 623 companies runsonwhat tracks.

### What analytics tools does Microsoft use?

Microsoft uses Microsoft Clarity for analytics, according to runsonwhat (October 2026). runsonwhat found Microsoft Clarity through Microsoft Clarity code on xandr.com. Microsoft Clarity is used by 126,070 companies runsonwhat tracks.

### Does Microsoft use Cloudflare?

Yes. runsonwhat found Cloudflare at Microsoft through a subdomain that points at Cloudflare. Cloudflare is a CDN & Edge tool used by 691,717 companies runsonwhat tracks.

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

The companies with the stacks most like Microsoft's are Talktalk, Giant Pay, Stelrad and Tire Rack, according to runsonwhat (October 2026). Each shares 4 to 9 tools with Microsoft, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Microsoft uses?

runsonwhat reads public records only. Of the 17 tools at Microsoft, 7 were found through DNS records, 7 through code on xandr.com and 3 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and xandr.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/xandr.com (updated October 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.