Core Infrastructure
- Google Cloud Platform – primary hosting, compute, storage, networking (global).
Communications
- Twilio SendGrid – transactional email delivery (global).
- Atlassian Opsgenie – incident alerting (US/EU).
Support Tools
- Zendesk – support ticketing (US/EU data centres).
- Linear – roadmap and issue tracking (EU).
Stark conducts security reviews and DPAs with each subprocessor. Updates are announced 30 days prior via the Trust Portal.