# What does Weekday use? Weekday (weekday.com) shows public evidence of 24 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Fashion Retail - Size: 201–1,000 employees - Based in: Stockholm, Sweden - Founded: 2002 - LinkedIn: https://www.linkedin.com/company/weekday ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Akamai](https://www.runsonwhat.com/reverse/akamai) | CDN & Edge | Custom domain, DNS records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code | | | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Akamai mPulse](https://www.runsonwhat.com/reverse/akamai-mpulse) | Monitoring | Website code | | | [Azure Monitor](https://www.runsonwhat.com/reverse/azure-monitor) | Analytics | Website code | | | [Tealium](https://www.runsonwhat.com/reverse/tealium) | Data Pipeline | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [Storyblok](https://www.runsonwhat.com/reverse/storyblok) | Website & CMS | Website code | | | [SAP Emarsys](https://www.runsonwhat.com/reverse/emarsys) | Marketing | Custom domain | | | [APSIS](https://www.runsonwhat.com/reverse/apsis) | Marketing | Email records | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Valimail](https://www.runsonwhat.com/reverse/valimail) | Security & Compliance | Email records | | | [KnowBe4](https://www.runsonwhat.com/reverse/knowbe4) | Security & Compliance | DNS verification records | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [Miro](https://www.runsonwhat.com/reverse/miro) | Collaboration | DNS verification records | | | [Autodesk](https://www.runsonwhat.com/reverse/autodesk) | Collaboration | DNS verification records | | | [Figma](https://www.runsonwhat.com/reverse/figma) | Collaboration | DNS verification records | | ## Recent changes at Weekday - 2026-10-20: started using [Anthropic](https://www.runsonwhat.com/reverse/anthropic) - 2026-10-20: started using [OpenAI](https://www.runsonwhat.com/reverse/openai) ## FAQ ### What tools does Weekday use? As of October 2026, runsonwhat has found 24 tools at Weekday (weekday.com) in public records. Edge & Hosting: Akamai. Application: React, Tailwind CSS and Next.js. Data & Observability: Akamai mPulse, Azure Monitor and Tealium. Go-to-market: Meta Pixel, Microsoft Ads and Storyblok. Company Ops: Microsoft 365, SendGrid and Atlassian. Last checked October 20, 2026. ### What email provider does Weekday use? Weekday uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 706,401 companies runsonwhat tracks. ### What analytics tools does Weekday use? Weekday uses Azure Monitor for analytics, according to runsonwhat (October 2026). runsonwhat found Azure Monitor through Azure Monitor code on weekday.com. Azure Monitor is used by 5,301 companies runsonwhat tracks. ### What is Weekday's website built with? Weekday uses Storyblok for its website, according to runsonwhat (October 2026). runsonwhat found Storyblok through Storyblok code on weekday.com. Storyblok is used by 2,499 companies runsonwhat tracks. ### What marketing software does Weekday use? Weekday uses SAP Emarsys for marketing, alongside APSIS, according to runsonwhat (October 2026). runsonwhat found SAP Emarsys through a subdomain that points at SAP Emarsys. SAP Emarsys is used by 1,031 companies runsonwhat tracks. ### What monitoring tools does Weekday use? Weekday uses Akamai mPulse for monitoring, according to runsonwhat (October 2026). runsonwhat found Akamai mPulse through Akamai mPulse code on weekday.com. Akamai mPulse is used by 5,751 companies runsonwhat tracks. ### Does Weekday use Meta Pixel? Yes. runsonwhat found Meta Pixel at Weekday through a DNS verification record for Meta Pixel. Meta Pixel is a Ads & Pixels tool used by 390,679 companies runsonwhat tracks. ### Does Weekday use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at Weekday; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Weekday may use more AI tools than these. ### Has Weekday changed tools recently? Yes. On runsonwhat's rechecks, Weekday started using Anthropic and OpenAI (latest on October 20, 2026). A change counts only between two checks of weekday.com done the same way. ### Which companies have a tech stack similar to Weekday's? The companies with the stacks most like Weekday's are & Other Stories, AWA, DELETE and Salon seudun ammattiopisto, according to runsonwhat (October 2026). Each shares 4 to 21 tools with Weekday, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Weekday uses? runsonwhat reads public records only. Of the 24 tools at Weekday, 10 were found through DNS records, 8 through code on weekday.com, 4 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 weekday.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/weekday.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.