# What does Viessmann Holding International GmbH use? Viessmann Holding International GmbH (viessmann.de) shows public evidence of 24 tools, according to runsonwhat (last checked 2026-10-20). - Based in: Germany - Founded: 1917 - LinkedIn: https://www.linkedin.com/company/viessmannclimatesolutions ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Fastly](https://www.runsonwhat.com/reverse/fastly) | CDN & Edge | Website code | | | [Akamai](https://www.runsonwhat.com/reverse/akamai) | CDN & Edge | Custom domain | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | 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 | | | [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code | | | [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code | | | [Matomo](https://www.runsonwhat.com/reverse/matomo) | Analytics | Website code | | | [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code | | | [Kameleoon](https://www.runsonwhat.com/reverse/kameleoon) | Flags & Experiments | 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 | | | [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Website code | | | [Trustpilot](https://www.runsonwhat.com/reverse/trustpilot) | Marketing | Website code | | | [Adobe Experience Manager](https://www.runsonwhat.com/reverse/adobe-aem) | Website & CMS | Website code | | | [Khoros](https://www.runsonwhat.com/reverse/khoros) | Support & Docs | Custom domain | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records | | | [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code | | | [Proofpoint](https://www.runsonwhat.com/reverse/proofpoint) | Security & Compliance | Email records | | | [Usercentrics](https://www.runsonwhat.com/reverse/usercentrics) | Security & Compliance | Website code | | | [Autodesk](https://www.runsonwhat.com/reverse/autodesk) | Collaboration | DNS verification records | | ## FAQ ### What tools does Viessmann Holding International use? As of October 2026, runsonwhat has found 24 tools at Viessmann Holding International (viessmann.de) in public records. Edge & Hosting: Fastly and Akamai. Application: Vimeo. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, Meta Pixel and LinkedIn Insight Tag. Company Ops: Microsoft 365, reCAPTCHA and Proofpoint. Last checked October 20, 2026. ### What CRM does Viessmann Holding International use? Viessmann Holding International uses Salesforce for its CRM, according to runsonwhat (October 2026). runsonwhat found Salesforce through Salesforce code on viessmann.de. Salesforce is used by 34,297 companies runsonwhat tracks. ### What email provider does Viessmann Holding International use? Viessmann Holding International uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 715,067 companies runsonwhat tracks. ### What does Viessmann Holding International use for customer support? Viessmann Holding International uses Khoros for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Khoros through a subdomain that points at Khoros. Khoros is used by 129 companies runsonwhat tracks. ### What analytics tools does Viessmann Holding International use? Viessmann Holding International uses Google Analytics for analytics, alongside Google Tag Manager, Microsoft Clarity and Hotjar, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on viessmann.de. Google Analytics is used by 888,679 companies runsonwhat tracks. ### What is Viessmann Holding International's website built with? Viessmann Holding International uses Adobe Experience Manager for its website, according to runsonwhat (October 2026). runsonwhat found Adobe Experience Manager through Adobe Experience Manager code on viessmann.de. Adobe Experience Manager is used by 4,182 companies runsonwhat tracks. ### Does Viessmann Holding International use Google Ads? Yes. runsonwhat found Google Ads at Viessmann Holding International through Google Ads code on viessmann.de. Google Ads is a Ads & Pixels tool used by 515,414 companies runsonwhat tracks. ### Which companies have a tech stack similar to Viessmann Holding International's? The companies with the stacks most like Viessmann Holding International's are Vodacom, NXP Semiconductors Czech Republic, Thinkific Labs and Acoustic, according to runsonwhat (October 2026). Each shares 6 to 13 tools with Viessmann Holding International, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Viessmann Holding International uses? runsonwhat reads public records only. Of the 24 tools at Viessmann Holding International, 16 were found through code on viessmann.de, 4 through DNS records, 2 through subdomains that point at the vendor, 1 through website configuration files and 1 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and viessmann.de about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/viessmann.de (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.