# What does Heidrick & Struggles use? Heidrick & Struggles (heidrick.com) shows public evidence of 47 tools, according to runsonwhat (last checked 2026-11-10). - Industry: Executive Search - Size: 1,001–5,000 employees - Based in: Chicago, United States - Founded: 1953 - LinkedIn: https://www.linkedin.com/company/heidrick- ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Custom domain, Website code | | | [CSC](https://www.runsonwhat.com/reverse/csc-domains) | DNS | DNS records | | | [Heroku](https://www.runsonwhat.com/reverse/heroku) | Hosting & Cloud | Custom domain | | | [Aptible](https://www.runsonwhat.com/reverse/aptible) | Hosting & Cloud | Custom domain | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code | | | [GSAP](https://www.runsonwhat.com/reverse/gsap) | Media & UI | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [Lottie](https://www.runsonwhat.com/reverse/lottie) | Media & UI | Website code | | | [MongoDB Atlas](https://www.runsonwhat.com/reverse/mongodb) | Backend & Database | DNS verification records | | | [Brightcove](https://www.runsonwhat.com/reverse/brightcove) | Media & UI | Website code | | | [Okta](https://www.runsonwhat.com/reverse/okta) | Auth & Identity | Custom domain, Website config | | | [Perplexity](https://www.runsonwhat.com/reverse/perplexity) | AI | DNS verification records | | | [Coveo](https://www.runsonwhat.com/reverse/coveo) | Search | 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 | | | [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | 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 | | | [X Ads](https://www.runsonwhat.com/reverse/x-ads) | Ads & Pixels | Website code | | | [Pardot](https://www.runsonwhat.com/reverse/pardot) | Marketing | Email records, Website code | | | [Reddit Ads](https://www.runsonwhat.com/reverse/reddit-ads) | Ads & Pixels | Website code | | | [Constant Contact](https://www.runsonwhat.com/reverse/constantcontact) | Marketing | Email records | | | [Taboola](https://www.runsonwhat.com/reverse/taboola) | Ads & Pixels | Website code | | | [6sense](https://www.runsonwhat.com/reverse/sixsense) | Sales & CRM | Website code | | | [Sitecore](https://www.runsonwhat.com/reverse/sitecore) | Website & CMS | Website code | | | [BrightEdge](https://www.runsonwhat.com/reverse/brightedge) | Marketing | Website code | | | [Scroll Viewport](https://www.runsonwhat.com/reverse/k15t) | Support & Docs | Custom domain | 2025-06 | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records | | | [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | 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 | | | [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Custom domain, Email records, Website code | 2022-10 | | [OneTrust](https://www.runsonwhat.com/reverse/onetrust) | Security & Compliance | DNS verification records, Website code | | | [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records, Website code | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records, Website code | | | [Smartsheet](https://www.runsonwhat.com/reverse/smartsheet) | Collaboration | DNS verification records | | | [Cursor](https://www.runsonwhat.com/reverse/cursor) | Dev Tools | DNS verification records | | | [TeamViewer](https://www.runsonwhat.com/reverse/teamviewer) | Dev Tools | DNS verification records | | | [Postman](https://www.runsonwhat.com/reverse/postman) | Dev Tools | DNS verification records | | | [Docebo](https://www.runsonwhat.com/reverse/docebo) | People & HR | Email records | | ## Recent changes at Heidrick & Struggles - 2026-11-10: stopped using [Proofpoint](https://www.runsonwhat.com/reverse/proofpoint) - 2026-11-01: started using [Brightcove](https://www.runsonwhat.com/reverse/brightcove) - 2026-10-09: started using [CSC](https://www.runsonwhat.com/reverse/csc-domains) - 2026-10-09: started using [Docebo](https://www.runsonwhat.com/reverse/docebo) ## FAQ ### What tools does Heidrick & Struggles use? As of November 2026, runsonwhat has found 47 tools at Heidrick & Struggles (heidrick.com) in public records. Edge & Hosting: Microsoft Azure, CSC and Heroku. Application: Google Fonts, GSAP and Anthropic. Data & Observability: Google Analytics, Google Tag Manager and Hotjar. Go-to-market: Google Ads, LinkedIn Insight Tag and Microsoft Ads. Company Ops: Microsoft 365, reCAPTCHA and SendGrid. Last checked November 10, 2026. ### What cloud does Heidrick & Struggles run on? Heidrick & Struggles uses Microsoft Azure for hosting and cloud infrastructure, alongside Heroku and Aptible, according to runsonwhat (November 2026). runsonwhat found Microsoft Azure through a subdomain that points at Microsoft Azure and code on heidrick.com. Microsoft Azure is used by 51,020 companies runsonwhat tracks. ### What CRM does Heidrick & Struggles use? Heidrick & Struggles uses Salesforce for its CRM, alongside 6sense, according to runsonwhat (November 2026). runsonwhat found Salesforce through email records that authorize Salesforce and code on heidrick.com. Salesforce is used by 35,590 companies runsonwhat tracks. ### What email provider does Heidrick & Struggles use? Heidrick & Struggles uses Microsoft 365 for email and office software, alongside Apple Business, 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 737,865 companies runsonwhat tracks. ### What does Heidrick & Struggles use for customer support? Heidrick & Struggles uses Zendesk for customer support and documentation, alongside Scroll Viewport, according to runsonwhat (November 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on heidrick.com. Zendesk is used by 43,837 companies runsonwhat tracks. ### What analytics tools does Heidrick & Struggles use? Heidrick & Struggles uses Google Analytics for analytics, alongside Google Tag Manager and Hotjar, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on heidrick.com. Google Analytics is used by 904,286 companies runsonwhat tracks. ### How long has Heidrick & Struggles used Mailgun? Heidrick & Struggles has used Mailgun since at least October 2022, going by the first public certificate of the heidrick.com subdomain that points at Mailgun. Other long-running tools at Heidrick & Struggles include Scroll Viewport (since June 2025). ### Does Heidrick & Struggles use Google Fonts? Yes. runsonwhat found Google Fonts at Heidrick & Struggles through Google Fonts code on heidrick.com. Google Fonts is a Media & UI tool used by 825,834 companies runsonwhat tracks. ### Does Heidrick & Struggles use AI tools? Yes. runsonwhat has found Anthropic, OpenAI and Perplexity at Heidrick & Struggles; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Heidrick & Struggles may use more AI tools than these. ### Has Heidrick & Struggles changed tools recently? Yes. On runsonwhat's rechecks, Heidrick & Struggles started using Brightcove, CSC and Docebo (latest on November 1, 2026) and stopped using Proofpoint (latest on November 10, 2026). A change counts only between two checks of heidrick.com done the same way. ### Which companies have a tech stack similar to Heidrick & Struggles's? The companies with the stacks most like Heidrick & Struggles' are Cloudera, Palo Alto Networks, United States Johnson Controls and LanguageLine Solutions, according to runsonwhat (November 2026). Each shares 15 to 22 tools with Heidrick & Struggles, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Heidrick & Struggles uses? runsonwhat reads public records only. Of the 47 tools at Heidrick & Struggles, 18 were found through code on heidrick.com, 15 through DNS records, 8 through email records and 6 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and heidrick.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/heidrick.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.