What tech stack does Arm use?

Arm's public-facing infrastructure is detected running on a combination of Microsoft Azure and Amazon Web Services — Azure is the apparent primary cloud, consistent with Arm's deep partnerships with Microsoft (a key Windows-on-Arm partner). Backend application logic is primarily served via PHP and Java, with ASP.NET and the .NET Framework also detected, running on Apache HTTP Server and NGINX behind a Microsoft IIS reverse proxy layer in some configurations.

Ubuntu Linux is Arm's detected server OS — unsurprising given that Arm itself maintains the Arm Linux kernel patches and Ubuntu is the reference OS for Arm's Neoverse data center platforms. Akamai and Cloudflare serve as CDN and DDoS protection layers for arm.com and developer.arm.com. New Relic is detected for application performance monitoring. Arm's internal engineering infrastructure — chip design tools, simulation environments, LLVM/Clang compiler toolchain — is proprietary and not publicly disclosed through StackShare or BuiltWith signals.

The arm.com web presence is built on Drupal CMS with Bootstrap for responsive layout, jQuery and Handlebars.js for client-side logic, and CKEditor for content authoring. Modernizr handles browser feature detection; Slick and Prism are detected for carousel and code-highlighting components respectively. The developer portal (developer.arm.com) runs on the same foundational stack with additional documentation and SDK hosting layers.

On the GTM and analytics side, Arm uses Google Analytics and Google Tag Manager for web measurement, Optimizely for A/B testing and personalization, and Marketo as its marketing automation platform — confirmed by StackShare and consistent with Arm's enterprise B2B go-to-market motion with 320+ licensees. AdRoll is detected for retargeting campaigns targeting chip designers and enterprise prospects. Highcharts powers data visualizations in investor-facing web content and technical documentation.

Arm runs a hybrid Azure + AWS cloud environment — vendors in cloud security, observability, and infrastructure management who support both clouds natively have a natural pitch. Arm's Drupal + PHP CMS stack is legacy by modern SaaS standards, suggesting potential appetite for web experience modernization (headless CMS, composable frontend) if positioned around developer productivity and the 22 million-developer ecosystem Arm serves.

Marketo as the marketing automation platform means Arm's marketing team is familiar with the Adobe ecosystem; a CRM integration pitch should reference Marketo compatibility. New Relic for APM is a replacement opportunity for vendors in the observability space (Datadog, Dynatrace). For security vendors: Arm's global footprint across 70+ offices, its status as a regulated UK public company, and the extreme sensitivity of its semiconductor IP all drive strong demand for endpoint security, identity management (Zero Trust), and data-loss prevention solutions. Arm evaluates vendors heavily on security certification (ISO 27001, SOC 2 Type II) and UK GDPR compliance — lead with those credentials and engineering workflow integration depth.