# What does Challenges use? Challenges (challenges.fr) shows public evidence of 36 tools, according to runsonwhat (last checked 2026-10-20). - Based in: France - LinkedIn: https://www.linkedin.com/company/80846 ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code | | | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain, Website code | 2024-12 | | [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 | | | [Vue.js](https://www.runsonwhat.com/reverse/vue) | Frontend | Website code | | | [Nuxt](https://www.runsonwhat.com/reverse/nuxt) | Frontend | 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 | | | [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code | | | [Matomo](https://www.runsonwhat.com/reverse/matomo) | Analytics | Website code | | | [Marfeel](https://www.runsonwhat.com/reverse/marfeel) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records, Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Website code | | | [Brevo](https://www.runsonwhat.com/reverse/brevo) | Marketing | DNS verification records, Email records, Website code | | | [Google Ad Manager](https://www.runsonwhat.com/reverse/google-ad-manager) | Ads & Pixels | Website config | | | [Microsoft Xandr](https://www.runsonwhat.com/reverse/xandr) | Ads & Pixels | Website config | | | [Magnite](https://www.runsonwhat.com/reverse/magnite) | Ads & Pixels | Website config | | | [PubMatic](https://www.runsonwhat.com/reverse/pubmatic) | Ads & Pixels | Website config | | | [Amazon Publisher Services](https://www.runsonwhat.com/reverse/amazon-publisher-services) | Ads & Pixels | Website config | | | [Index Exchange](https://www.runsonwhat.com/reverse/index-exchange) | Ads & Pixels | Website config | | | [TripleLift](https://www.runsonwhat.com/reverse/triplelift) | Ads & Pixels | Website config | | | [Taboola](https://www.runsonwhat.com/reverse/taboola) | Ads & Pixels | Website config | | | [Sharethrough](https://www.runsonwhat.com/reverse/sharethrough) | Ads & Pixels | Website config | | | [Teads](https://www.runsonwhat.com/reverse/teads) | Ads & Pixels | Website config | | | [Outbrain](https://www.runsonwhat.com/reverse/outbrain) | Ads & Pixels | Website config | | | [Piano](https://www.runsonwhat.com/reverse/piano) | Marketing | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records, Website code | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records | | | [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records | | | [Valimail](https://www.runsonwhat.com/reverse/valimail) | Security & Compliance | Email records | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | ## FAQ ### What tools does Challenges use? As of October 2026, runsonwhat has found 36 tools at Challenges (challenges.fr) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: Tailwind CSS, Vue.js and Nuxt. Data & Observability: Google Analytics, Google Tag Manager and Sentry. Go-to-market: Google Ads, Meta Pixel and LinkedIn Insight Tag. Company Ops: Microsoft 365, Amazon SES and Mailchimp Transactional. Last checked October 20, 2026. ### What cloud does Challenges run on? Challenges uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services and code on challenges.fr, and Challenges has used it since at least December 2024. Amazon Web Services is used by 145,980 companies runsonwhat tracks. ### What email provider does Challenges use? Challenges uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 714,942 companies runsonwhat tracks. ### What analytics tools does Challenges use? Challenges uses Google Analytics for analytics, alongside Google Tag Manager, Matomo and Marfeel, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on challenges.fr. Google Analytics is used by 887,959 companies runsonwhat tracks. ### What marketing software does Challenges use? Challenges uses Mailchimp for marketing, alongside Brevo and Piano, according to runsonwhat (October 2026). runsonwhat found Mailchimp through Mailchimp code on challenges.fr. Mailchimp is used by 116,133 companies runsonwhat tracks. ### What monitoring tools does Challenges use? Challenges uses Sentry for monitoring, according to runsonwhat (October 2026). runsonwhat found Sentry through Sentry code on challenges.fr. Sentry is used by 79,039 companies runsonwhat tracks. ### How long has Challenges used Amazon Web Services? Challenges has used Amazon Web Services since at least December 2024, going by the first public certificate of the challenges.fr subdomain that points at Amazon Web Services. ### Does Challenges use Cloudflare? Yes. runsonwhat found Cloudflare at Challenges through Cloudflare code on challenges.fr. Cloudflare is a CDN & Edge tool used by 707,586 companies runsonwhat tracks. ### Which companies have a tech stack similar to Challenges's? The companies with the stacks most like Challenges' are bonvivir, WHEC.com, Future and lindependant.fr, according to runsonwhat (October 2026). Each shares 10 to 18 tools with Challenges, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Challenges uses? runsonwhat reads public records only. Of the 36 tools at Challenges, 13 were found through code on challenges.fr, 11 through website configuration files, 6 through DNS records, 4 through email records and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and challenges.fr about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/challenges.fr (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.