# What does Bayer 04 Leverkusen Fussball GmbH use? Bayer 04 Leverkusen Fussball GmbH (bayer04.de) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-11-02). - Industry: Sports - Size: 201–1,000 employees - Based in: Leverkusen, Germany - Founded: 1904 - LinkedIn: https://www.linkedin.com/company/bayer-04-leverkusen ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Angular](https://www.runsonwhat.com/reverse/angular) | Frontend | Website code | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Mapp](https://www.runsonwhat.com/reverse/mapp) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records, Website code | | | [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records | | | [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records | | | [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records | | | [Valimail](https://www.runsonwhat.com/reverse/valimail) | Security & Compliance | Email records | | | [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | DNS verification records, Email records, Website code | | | [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records, Website code | | | [Amazon Trust Services](https://www.runsonwhat.com/reverse/amazon-trust) | Security & Compliance | DNS records | | | [Usercentrics](https://www.runsonwhat.com/reverse/usercentrics) | Security & Compliance | Website code | | ## Recent changes at Bayer 04 Leverkusen Fussball GmbH - 2026-11-02: stopped using [Adobe](https://www.runsonwhat.com/reverse/adobe) - 2026-11-02: stopped using [Inxmail](https://www.runsonwhat.com/reverse/inxmail) - 2026-11-02: stopped using [Jamf](https://www.runsonwhat.com/reverse/jamf) - 2026-11-02: stopped using [Miro](https://www.runsonwhat.com/reverse/miro) - 2026-11-02: stopped using [Notion](https://www.runsonwhat.com/reverse/notion) - 2026-11-02: stopped using [Atlassian](https://www.runsonwhat.com/reverse/atlassian) - 2026-11-02: stopped using [Figma](https://www.runsonwhat.com/reverse/figma) - 2026-11-02: stopped using [Google Search Console](https://www.runsonwhat.com/reverse/gsc) - 2026-11-02: stopped using [Heyhack](https://www.runsonwhat.com/reverse/heyhack) - 2026-10-19: started using [Amazon Trust Services](https://www.runsonwhat.com/reverse/amazon-trust) - 2026-10-19: started using [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) - 2026-10-19: started using [DigiCert](https://www.runsonwhat.com/reverse/digicert) ## FAQ ### What tools does Bayer 04 Leverkusen Fussball use? As of November 2026, runsonwhat has found 14 tools at Bayer 04 Leverkusen Fussball (bayer04.de) in public records. Edge & Hosting: Amazon Web Services. Application: Angular. Data & Observability: Mapp. Go-to-market: Microsoft Ads. Company Ops: Microsoft 365, Amazon SES and Let's Encrypt. Last checked November 2, 2026. ### What cloud does Bayer 04 Leverkusen Fussball run on? Bayer 04 Leverkusen Fussball uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on bayer04.de. Amazon Web Services is used by 147,270 companies runsonwhat tracks. ### What email provider does Bayer 04 Leverkusen Fussball use? Bayer 04 Leverkusen Fussball 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 code on bayer04.de. Microsoft 365 is used by 729,878 companies runsonwhat tracks. ### What analytics tools does Bayer 04 Leverkusen Fussball use? Bayer 04 Leverkusen Fussball uses Mapp for analytics, according to runsonwhat (November 2026). runsonwhat found Mapp through Mapp code on bayer04.de. Mapp is used by 163 companies runsonwhat tracks. ### Does Bayer 04 Leverkusen Fussball use Microsoft Ads? Yes. runsonwhat found Microsoft Ads at Bayer 04 Leverkusen Fussball through Microsoft Ads code on bayer04.de. Microsoft Ads is a Ads & Pixels tool used by 120,771 companies runsonwhat tracks. ### Has Bayer 04 Leverkusen Fussball changed tools recently? Yes. On runsonwhat's rechecks, Bayer 04 Leverkusen Fussball started using Amazon Trust Services, Let's Encrypt and DigiCert (latest on October 19, 2026) and stopped using Adobe, Inxmail and Jamf (latest on November 2, 2026). A change counts only between two checks of bayer04.de done the same way. ### Which companies have a tech stack similar to Bayer 04 Leverkusen Fussball's? The companies with the stacks most like Bayer 04 Leverkusen Fussball's are Aqipa Gear Guru, Quattroruote, DEG - Deutsche Investitions- und Entwicklungsgesellschaft and Radio Monte Carlo, according to runsonwhat (November 2026). Each shares 2 to 5 tools with Bayer 04 Leverkusen Fussball, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Bayer 04 Leverkusen Fussball uses? runsonwhat reads public records only. Of the 14 tools at Bayer 04 Leverkusen Fussball, 6 were found through DNS records, 5 through code on bayer04.de and 3 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and bayer04.de about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/bayer04.de (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.