# What does The I/O use? The I/O (theio.com) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-10-31). - Industry: Health, Wellness and Fitness - Size: 11–50 employees - Based in: San Pedro De Alcántara, Spain - Founded: 2021 - LinkedIn: https://www.linkedin.com/company/theio ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | ## 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 | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code | | | [Umbraco](https://www.runsonwhat.com/reverse/umbraco) | Website & CMS | Website code | | | [GetResponse](https://www.runsonwhat.com/reverse/getresponse) | Marketing | Email records | | | [APSIS](https://www.runsonwhat.com/reverse/apsis) | Marketing | Email records | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records | | | [Cookie Information](https://www.runsonwhat.com/reverse/cookie-information) | Security & Compliance | Website code | | ## Recent changes at The I/O - 2026-10-31: stopped using [dmarcian](https://www.runsonwhat.com/reverse/dmarcian) ## FAQ ### What tools does The I/O use? As of November 2026, runsonwhat has found 14 tools at The I/O (theio.com) in public records. Edge & Hosting: Microsoft Azure. Application: Google Fonts and Anthropic. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Meta Pixel, Umbraco and GetResponse. Company Ops: Microsoft 365, SendGrid and Atlassian. Last checked October 31, 2026. ### What cloud does The I/O run on? The I/O uses Microsoft Azure for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Microsoft Azure through Microsoft Azure code on theio.com. Microsoft Azure is used by 49,664 companies runsonwhat tracks. ### What email provider does The I/O use? The I/O uses Microsoft 365 for email and office software, 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 726,422 companies runsonwhat tracks. ### What analytics tools does The I/O use? The I/O uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on theio.com. Google Analytics is used by 905,634 companies runsonwhat tracks. ### What is The I/O's website built with? The I/O uses Umbraco for its website, according to runsonwhat (November 2026). runsonwhat found Umbraco through Umbraco code on theio.com. Umbraco is used by 1,748 companies runsonwhat tracks. ### What marketing software does The I/O use? The I/O uses GetResponse for marketing, alongside APSIS, according to runsonwhat (November 2026). runsonwhat found GetResponse through email records that authorize GetResponse. GetResponse is used by 1,490 companies runsonwhat tracks. ### Does The I/O use Google Fonts? Yes. runsonwhat found Google Fonts at The I/O through Google Fonts code on theio.com. Google Fonts is a Media & UI tool used by 825,734 companies runsonwhat tracks. ### Does The I/O use AI tools? Yes. runsonwhat has found Anthropic at The I/O; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so The I/O may use more AI tools than these. ### Has The I/O changed tools recently? Yes. On runsonwhat's rechecks, The I/O stopped using dmarcian (latest on October 31, 2026). A change counts only between two checks of theio.com done the same way. ### Which companies have a tech stack similar to The I/O's? The companies with the stacks most like The I/O's are Stiftelsen för strategisk forskning, DF Kompetens, OBOS and Isännöintiliitto, according to runsonwhat (November 2026). Each shares 4 to 9 tools with The I/O, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what The I/O uses? runsonwhat reads public records only. Of the 14 tools at The I/O, 7 were found through code on theio.com, 4 through email records and 3 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and theio.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/theio.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.