Flex's tech stack
What does Flex use?
Flex (flex.team) uses at least 25 tools we can see from public records, including Amazon Web Services for hosting, Microsoft 365 for email and documents, Intercom for customer support and Google Analytics for analytics. Last checked .
- Industry
- IT Services
- Size
- 51–200 employees
- Based in
- Seoul, South Korea
- Company page
- Tools found
- 25
- Categories
- 13
- Layers
- 5 of 5
- Last checked
- Oct 2026
Flex's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
3 tools, where the bytes are served from
Application
4 tools, what the product is built with
Data & Observability
4 tools, what they measure and store
Go-to-market
6 tools, how they find and keep customers
Marketing
Ads & Pixels
Support & Docs
Company Ops
8 tools, what the team runs on day to day
Email Delivery
Companies like Flex also use
Tools common among companies with a similar stack that we haven't found at Flex.
Companies with a stack like Flex's
Ranked by shared tools, with rare tools counting more.
OpslevelIT Services · 51–200 people13in common
CM.comIT Services · 1,001–5,000 people12in common
Fat ZebraFinancial Services · 51–200 people12in common
ApostraSoftware · 51–200 people11in common
VitesseFinancial Services · 51–200 people10in common
GustoInternet · 1,001–5,000 people15in common
Axoniusaxonius.com7in common
CohesityComputer Storage Media · 5,001–10,000 people13in common
More IT Services companies
Other IT Services companies we've checked.
Flex tech stack FAQ
What tools does Flex use?
As of October 2026, runsonwhat has found 25 tools at Flex (flex.team) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Amazon CloudFront. Application: React, Anthropic and Next.js. Data & Observability: Google Analytics, Google Tag Manager and Sentry. Go-to-market: Google Ads, Meta Pixel and Ahrefs. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 7, 2026.
What cloud does Flex run on?
Flex uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on flex.team. Amazon Web Services is used by 143,085 companies runsonwhat tracks.
What email provider does Flex use?
Flex uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 693,068 companies runsonwhat tracks.
What does Flex use for customer support?
Flex uses Intercom for customer support and documentation, alongside ReadMe, according to runsonwhat (October 2026). runsonwhat found Intercom through Intercom code on flex.team. Intercom is used by 7,573 companies runsonwhat tracks.
What analytics tools does Flex use?
Flex uses Google Analytics for analytics, alongside Google Tag Manager and Naver Analytics, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on flex.team. Google Analytics is used by 749,056 companies runsonwhat tracks.
What marketing software does Flex use?
Flex uses Ahrefs for marketing, according to runsonwhat (October 2026). runsonwhat found Ahrefs through a DNS verification record for Ahrefs. Ahrefs is used by 21,824 companies runsonwhat tracks.
Does Flex use Google Ads?
Yes. runsonwhat found Google Ads at Flex through Google Ads code on flex.team. Google Ads is a Ads & Pixels tool used by 406,050 companies runsonwhat tracks.
Does Flex use AI tools?
Yes. runsonwhat has found Anthropic and OpenAI at Flex; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Flex may use more AI tools than these.
Which companies have a tech stack similar to Flex's?
The companies with the stacks most like Flex's are Opslevel, CM.com, Fat Zebra and Apostra, according to runsonwhat (October 2026). Each shares 11 to 13 tools with Flex, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what Flex uses?
runsonwhat reads public records only. Of the 25 tools at Flex, 10 were found through code on flex.team, 10 through DNS records, 4 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and flex.team about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.