# What does Citadium use? Citadium (citadium.com) shows public evidence of 24 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Apparel & Fashion - Size: 201–1,000 employees - Based in: Paris, France - Founded: 2000 - LinkedIn: https://www.linkedin.com/company/citadium ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Custom domain, Website code | | | [Gandi](https://www.runsonwhat.com/reverse/gandi) | DNS | DNS records | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [PayPal](https://www.runsonwhat.com/reverse/paypal) | Payments & Billing | 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 | | | [Contentsquare](https://www.runsonwhat.com/reverse/contentsquare) | Analytics | Website code | | | [Kameleoon](https://www.runsonwhat.com/reverse/kameleoon) | Flags & Experiments | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [TikTok Pixel](https://www.runsonwhat.com/reverse/tiktok-pixel) | Ads & Pixels | Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain, Email records, Website code | | | [Microsoft Xandr](https://www.runsonwhat.com/reverse/xandr) | Ads & Pixels | Website code | | | [Criteo](https://www.runsonwhat.com/reverse/criteo) | Ads & Pixels | Website code | | | [Snap Pixel](https://www.runsonwhat.com/reverse/snap-pixel) | Ads & Pixels | Website code | | | [RTB House](https://www.runsonwhat.com/reverse/rtb-house) | Ads & Pixels | Website code | | | [Trusted Shops](https://www.runsonwhat.com/reverse/trusted-shops) | Marketing | Website code | | | [Tradedoubler](https://www.runsonwhat.com/reverse/tradedoubler) | Ads & Pixels | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Proofpoint](https://www.runsonwhat.com/reverse/proofpoint) | Security & Compliance | Email records | | | [Red Sift OnDMARC](https://www.runsonwhat.com/reverse/redsift) | Security & Compliance | Email records | | | [Figma](https://www.runsonwhat.com/reverse/figma) | Collaboration | DNS verification records | | | [Airtable](https://www.runsonwhat.com/reverse/airtable) | Collaboration | DNS verification records | | ## FAQ ### What tools does Citadium use? As of October 2026, runsonwhat has found 24 tools at Citadium (citadium.com) in public records. Edge & Hosting: Cloudflare and Gandi. Application: PayPal. Data & Observability: Google Analytics, Google Tag Manager and Contentsquare. Go-to-market: Meta Pixel, Microsoft Ads and TikTok Pixel. Company Ops: Microsoft 365, SendGrid and Proofpoint. Last checked October 20, 2026. ### What email provider does Citadium use? Citadium 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 and email records. Microsoft 365 is used by 712,556 companies runsonwhat tracks. ### What does Citadium use for customer support? Citadium uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and email records. Zendesk is used by 42,039 companies runsonwhat tracks. ### What payment provider does Citadium use? Citadium uses PayPal for payments and billing, according to runsonwhat (October 2026). runsonwhat found PayPal through PayPal code on citadium.com. PayPal is used by 34,567 companies runsonwhat tracks. ### What analytics tools does Citadium use? Citadium uses Google Analytics for analytics, alongside Google Tag Manager and Contentsquare, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on citadium.com. Google Analytics is used by 884,623 companies runsonwhat tracks. ### What marketing software does Citadium use? Citadium uses Trusted Shops for marketing, according to runsonwhat (October 2026). runsonwhat found Trusted Shops through Trusted Shops code on citadium.com. Trusted Shops is used by 2,814 companies runsonwhat tracks. ### Does Citadium use Cloudflare? Yes. runsonwhat found Cloudflare at Citadium through a subdomain that points at Cloudflare and code on citadium.com. Cloudflare is a CDN & Edge tool used by 705,437 companies runsonwhat tracks. ### Which companies have a tech stack similar to Citadium's? The companies with the stacks most like Citadium's are GRAINDEMALICE, S.oliver Group Benelux, ROUGEGORGE and Liebeskind Berlin, according to runsonwhat (October 2026). Each shares 9 to 14 tools with Citadium, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Citadium uses? runsonwhat reads public records only. Of the 24 tools at Citadium, 14 were found through code on citadium.com, 5 through DNS records, 3 through email records and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and citadium.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/citadium.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.