Legal · Sub-processors
SUB-
PROCESSORS.
Last updated: 1 August 2025 · Changes notified 30 days in advance
Lengdon uses the following sub-processors to provide the platform. Per our Data Processing Agreement, we provide 30 days notice before adding or replacing sub-processors. Customers may object to changes during this period.
Sub-processor
Category
Location
Amazon Web Services (AWS)
Hosting, compute, storage, and database services for the Lengdon platform.
Cloud infrastructure
United States / EU
Cloudflare
Content delivery, DDoS protection, and TLS termination for platform traffic.
CDN & security
United States / Global
Stripe
Payment method storage and processing for Lengdon subscription billing. Not used for transaction payment confirmation in closing rooms.
Payment processing
United States
SendGrid (Twilio)
Delivery of system notifications, gate confirmation emails, and account verification messages.
Transactional email
United States
PlanetScale / Vitess
Relational database hosting for transaction room data, audit logs, and user accounts.
Database
United States
Sentry
Application error tracking and performance monitoring. PII is scrubbed before transmission.
Error monitoring
United States
Vercel
Serving of the Lengdon web application to end users.
Frontend delivery
United States / Global edge
To receive advance notification of sub-processor changes, contact privacy@lengdon.com. For questions about our Data Processing Agreement, see the full DPA at lengdon.com/legal/dpa.