# What does Cielo use? Cielo (cielo.com.br) shows public evidence of 37 tools, according to runsonwhat (last checked 2026-10-09). - Industry: Financial Services - Size: 1,001–5,000 employees - Based in: Barueri, Brazil - Founded: 1995 - LinkedIn: https://www.linkedin.com/company/cielo ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain, Website code | | | [Akamai](https://www.runsonwhat.com/reverse/akamai) | CDN & Edge | Custom domain, Website code | 2016-04 | ## 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 | | | [Vue.js](https://www.runsonwhat.com/reverse/vue) | Frontend | Website code | | | [Nuxt](https://www.runsonwhat.com/reverse/nuxt) | Frontend | Website code | | | [MongoDB Atlas](https://www.runsonwhat.com/reverse/mongodb) | Backend & Database | 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 | | | [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code | | | [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code | | | [VWO](https://www.runsonwhat.com/reverse/vwo) | Flags & Experiments | Website code | | | [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain | 2023-08 | | [Akamai mPulse](https://www.runsonwhat.com/reverse/akamai-mpulse) | Monitoring | Website code | | | [Dynatrace](https://www.runsonwhat.com/reverse/dynatrace) | Monitoring | Website code | | | [Qualtrics](https://www.runsonwhat.com/reverse/qualtrics) | Analytics | Email records | | | [AppsFlyer](https://www.runsonwhat.com/reverse/appsflyer) | Analytics | Website code | | | [Salesforce Personalization](https://www.runsonwhat.com/reverse/salesforce-personalization) | Flags & Experiments | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [WhatsApp Business](https://www.runsonwhat.com/reverse/whatsapp) | Support & Docs | Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records, Website code | | | [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Email records, Website code | | | [ReadMe](https://www.runsonwhat.com/reverse/readme) | Support & Docs | Custom domain | 2024-08 | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | DNS verification records, Email records, Website code | | | [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records | | | [Webex](https://www.runsonwhat.com/reverse/webex) | Collaboration | DNS verification records | | | [Miro](https://www.runsonwhat.com/reverse/miro) | Collaboration | DNS verification records | | | [Jamf](https://www.runsonwhat.com/reverse/jamf) | Security & Compliance | DNS verification records | | | [Figma](https://www.runsonwhat.com/reverse/figma) | Collaboration | DNS verification records | | | [TeamViewer](https://www.runsonwhat.com/reverse/teamviewer) | Dev Tools | DNS verification records | | | [SAP SuccessFactors](https://www.runsonwhat.com/reverse/sap-successfactors) | People & HR | DNS verification records | | | [Postman](https://www.runsonwhat.com/reverse/postman) | Dev Tools | DNS verification records | | ## Recent changes at Cielo - 2026-10-09: started using [Qualtrics](https://www.runsonwhat.com/reverse/qualtrics) - 2026-10-09: started using [Webex](https://www.runsonwhat.com/reverse/webex) ## FAQ ### What tools does Cielo use? As of October 2026, runsonwhat has found 37 tools at Cielo (cielo.com.br) in public records. Edge & Hosting: Amazon Web Services and Akamai. Application: Google Fonts, Anthropic and Vue.js. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, WhatsApp Business and Zendesk. Company Ops: Microsoft 365, SendGrid and Apple Business. Last checked October 9, 2026. ### What cloud does Cielo run on? Cielo 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 cielo.com.br. Amazon Web Services is used by 144,384 companies runsonwhat tracks. ### What CRM does Cielo use? Cielo uses Salesforce for its CRM, according to runsonwhat (October 2026). runsonwhat found Salesforce through email records that authorize Salesforce and code on cielo.com.br. Salesforce is used by 32,997 companies runsonwhat tracks. ### What email provider does Cielo use? Cielo uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on cielo.com.br. Microsoft 365 is used by 695,255 companies runsonwhat tracks. ### What does Cielo use for customer support? Cielo uses WhatsApp Business for customer support and documentation, alongside Zendesk and ReadMe, according to runsonwhat (October 2026). runsonwhat found WhatsApp Business through WhatsApp Business code on cielo.com.br. WhatsApp Business is used by 132,355 companies runsonwhat tracks. ### What analytics tools does Cielo use? Cielo uses Google Analytics for analytics, alongside Google Tag Manager, Microsoft Clarity and Qualtrics, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on cielo.com.br. Google Analytics is used by 843,404 companies runsonwhat tracks. ### How long has Cielo used Akamai? Cielo has used Akamai since at least April 2016, going by the first public certificate of the cielo.com.br subdomain that points at Akamai. Other long-running tools at Cielo include Atlassian Statuspage (since August 2023) and ReadMe (since August 2024). ### Does Cielo use Google Fonts? Yes. runsonwhat found Google Fonts at Cielo through Google Fonts code on cielo.com.br. Google Fonts is a Media & UI tool used by 785,240 companies runsonwhat tracks. ### Does Cielo use AI tools? Yes. runsonwhat has found Anthropic at Cielo; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Cielo may use more AI tools than these. ### Has Cielo changed tools recently? Yes. On runsonwhat's rechecks, Cielo started using Qualtrics and Webex (latest on October 9, 2026). A change counts only between two checks of cielo.com.br done the same way. ### Which companies have a tech stack similar to Cielo's? The companies with the stacks most like Cielo's are FIS Global, Geidea, ClearScore and Polígono Capital, according to runsonwhat (October 2026). Each shares 8 to 12 tools with Cielo, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Cielo uses? runsonwhat reads public records only. Of the 37 tools at Cielo, 14 were found through code on cielo.com.br, 14 through DNS records, 5 through email records and 4 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and cielo.com.br about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/cielo.com.br (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.