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A complete list of third-party vendors we use to provide our services.
Last Updated: January 13, 2026
We use various third-party vendors (sub-processors) to deliver our services. Listed below are the vendors with whom we may share customer data to provide infrastructure, services, and AI-powered features. Your account is linked to a specific Stack Up data region. The sub-processor hosting region for your account will usually match your Stack Up data region.
| Name | Service | Data Shared | Hosting Regions |
|---|---|---|---|
| Amazon Web Services (AWS) | Cloud Infrastructure & Database Hosting | All application data, databases, file storage, and backups | US (N. Virginia, Oregon)EU (Frankfurt)APAC (Sydney) |
| Google Cloud Platform | API Services & Analytics | PageSpeed API data, analytics processing | USEU |
| Name | Service | Data Shared | Hosting Regions |
|---|---|---|---|
| Resend | Email Delivery Service | Email addresses and notification content | US |
| Stripe | Payment Processing | Billing information and payment details | US |
| Apify | Web Scraping & Data Collection | Domain URLs and crawled website data | USEU |
| Bright Data | Web Data Collection | Domain URLs and page content for analysis | Global |
The following AI sub-processors are applicable to accounts that use Stack Up's AI-powered features. Customer data processed by AI sub-processors is not used for model training.
All sub-processors undergo security and privacy assessments before engagement and are required to maintain appropriate security measures. We have Data Processing Agreements in place with all sub-processors to ensure GDPR compliance and data protection.
View our Data Processing Agreement →