# What does Kustomer use?

Kustomer (kustomerapp.com) shows public evidence of 11 tools, according to runsonwhat (last checked 2026-10-31).

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain, Website code |  |
| [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 |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code |  |
| [LaunchDarkly](https://www.runsonwhat.com/reverse/launchdarkly) | Flags & Experiments | Website code |  |
| [Pendo](https://www.runsonwhat.com/reverse/pendo) | Analytics | Custom domain |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Appcues](https://www.runsonwhat.com/reverse/appcues) | Marketing | Custom domain |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Email records, Website code |  |
| [Postmark](https://www.runsonwhat.com/reverse/postmark) | Email Delivery | Email records |  |

## FAQ

### What tools does Kustomer use?

As of November 2026, runsonwhat has found 11 tools at Kustomer (kustomerapp.com) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Amazon CloudFront. Application: Tailwind CSS. Data & Observability: Sentry, LaunchDarkly and Pendo. Go-to-market: Appcues. Company Ops: Mailgun and Postmark. Last checked October 31, 2026.

### What cloud does Kustomer run on?

Kustomer uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services and code on kustomerapp.com. Amazon Web Services is used by 146,844 companies runsonwhat tracks.

### What analytics tools does Kustomer use?

Kustomer uses Pendo for analytics, according to runsonwhat (November 2026). runsonwhat found Pendo through a subdomain that points at Pendo. Pendo is used by 1,784 companies runsonwhat tracks.

### What marketing software does Kustomer use?

Kustomer uses Appcues for marketing, according to runsonwhat (November 2026). runsonwhat found Appcues through a subdomain that points at Appcues. Appcues is used by 167 companies runsonwhat tracks.

### What monitoring tools does Kustomer use?

Kustomer uses Sentry for monitoring, according to runsonwhat (November 2026). runsonwhat found Sentry through Sentry code on kustomerapp.com. Sentry is used by 80,055 companies runsonwhat tracks.

### Does Kustomer use Amazon Route 53?

Yes. runsonwhat found Amazon Route 53 at Kustomer through DNS records that point at Amazon Route 53. Amazon Route 53 is a DNS tool used by 87,451 companies runsonwhat tracks.

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

The companies with the stacks most like Kustomer's are Courthousedirect.com, AfroHairCandy, Frigade and Alphonso, according to runsonwhat (November 2026). Each shares 4 to 6 tools with Kustomer, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Kustomer uses?

runsonwhat reads public records only. Of the 11 tools at Kustomer, 4 were found through subdomains that point at the vendor, 3 through code on kustomerapp.com, 2 through DNS records and 2 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and kustomerapp.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/kustomerapp.com (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.