# What does ITRS use? ITRS (itrsgroup.com) shows public evidence of 25 tools, according to runsonwhat (last checked 2026-10-19). - Industry: Software - Size: 201–1,000 employees - Based in: London, United Kingdom - Founded: 1997 - LinkedIn: https://www.linkedin.com/company/itrsgroup ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain, Website code | | | [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records | | | [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [Algolia](https://www.runsonwhat.com/reverse/algolia) | 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 | | ## 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 | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records, Website code | | | [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Custom domain, Email records, Website code | 2020-04 | | [Pardot](https://www.runsonwhat.com/reverse/pardot) | Marketing | Custom domain, DNS verification records, Email records, Website code | 2022-12 | | [Apollo.io](https://www.runsonwhat.com/reverse/apollo) | Sales & CRM | Website code | | | [Discourse](https://www.runsonwhat.com/reverse/discourse) | Support & Docs | Custom domain | 2021-11 | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Exclaimer](https://www.runsonwhat.com/reverse/exclaimer) | Workspace | Email records | | | [OneTrust](https://www.runsonwhat.com/reverse/onetrust) | Security & Compliance | Website code | | | [Mimecast](https://www.runsonwhat.com/reverse/mimecast) | Security & Compliance | Email records | | | [Webex](https://www.runsonwhat.com/reverse/webex) | Collaboration | DNS verification records | | | [Cursor](https://www.runsonwhat.com/reverse/cursor) | Dev Tools | DNS verification records | | | [Zapier](https://www.runsonwhat.com/reverse/zapier) | Dev Tools | DNS verification records | | ## FAQ ### What tools does ITRS use? As of October 2026, runsonwhat has found 25 tools at ITRS (itrsgroup.com) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Microsoft Azure. Application: jQuery, OpenAI and Algolia. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads, LinkedIn Insight Tag and HubSpot. Company Ops: Microsoft 365, Atlassian and Exclaimer. Last checked October 19, 2026. ### What cloud does ITRS run on? ITRS uses Amazon Web Services for hosting and cloud infrastructure, alongside Microsoft Azure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services and code on itrsgroup.com. Amazon Web Services is used by 145,487 companies runsonwhat tracks. ### What CRM does ITRS use? ITRS uses HubSpot for its CRM, alongside Salesforce and Apollo.io, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on itrsgroup.com. HubSpot is used by 93,670 companies runsonwhat tracks. ### What email provider does ITRS use? ITRS uses Microsoft 365 for email and office software, alongside Exclaimer, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 709,037 companies runsonwhat tracks. ### What does ITRS use for customer support? ITRS uses Zendesk for customer support and documentation, alongside Discourse, according to runsonwhat (October 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on itrsgroup.com. Zendesk is used by 41,616 companies runsonwhat tracks. ### What analytics tools does ITRS use? ITRS uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on itrsgroup.com. Google Analytics is used by 875,626 companies runsonwhat tracks. ### How long has ITRS used Salesforce? ITRS has used Salesforce since at least April 2020, going by the first public certificate of the itrsgroup.com subdomain that points at Salesforce. Other long-running tools at ITRS include Discourse (since November 2021) and Pardot (since December 2022). ### Does ITRS use jQuery? Yes. runsonwhat found jQuery at ITRS through jQuery code on itrsgroup.com. jQuery is a Frontend tool used by 913,151 companies runsonwhat tracks. ### Does ITRS use AI tools? Yes. runsonwhat has found OpenAI at ITRS; OpenAI, for example, through a DNS verification record for OpenAI. AI services called only from servers leave no public trace, so ITRS may use more AI tools than these. ### Which companies have a tech stack similar to ITRS's? The companies with the stacks most like ITRS' are Sigma Computing, Bitwarden, Coralogix and Neo4j, according to runsonwhat (October 2026). Each shares 10 to 16 tools with ITRS, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what ITRS uses? runsonwhat reads public records only. Of the 25 tools at ITRS, 9 were found through code on itrsgroup.com, 8 through DNS records, 4 through subdomains that point at the vendor and 4 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and itrsgroup.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/itrsgroup.com (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.