Mast Finance Sàrl — Last updated: 29 May 2026
Mast Finance engages the following third-party subprocessors to provide components of the Service. This page is maintained in accordance with our Data Processing Agreement.
Customers may object to a new or replacement subprocessor on reasonable and documented data protection grounds within 14 days of the relevant update being published on this page, as described in our DPA.
Current Subprocessors
| Subprocessor | Purpose | Data location | Country |
|---|---|---|---|
| Amazon Web Services (AWS) | Cloud infrastructure, hosting, storage, compute, transactional email delivery (SES), and AI inference (AWS Bedrock — large-language-model processing for Mast AI: in-app help, financial analysis, and report generation). Customer Data (financial and accounting records) is stored exclusively in the Switzerland (Zurich) region; AI inference is processed exclusively in the AWS Switzerland (Zurich) region via Bedrock's EU inference profiles. | Switzerland (eu-central-2) for Customer Data and AI inference; EU (eu-central-1) for email delivery and embedding/reranking; global edge locations for static assets (CloudFront) | United States (AWS EMEA Sàrl, Luxembourg entity; covered by AWS DPA) |
| Stripe | Payment processing, billing, and subscription management | EU / US (billing contact data only) | United States (certified under EU-US Data Privacy Framework) |
| PostHog, Inc. | Product analytics — usage events, feature adoption, and (where enabled) anonymised session recordings with masked input fields. Processes Service Data only (telemetry); no Customer Data is transmitted. | EU (Frankfurt, eu-central-1) via PostHog Cloud EU | United States (EU Cloud region; SCCs in place) |
| Functional Software, Inc. dba Sentry | Error tracking and performance monitoring — stack traces and technical metadata. No personal data is collected by default. | EU (Frankfurt) via Sentry Cloud EU region | United States (EU data residency; SCCs in place) |
Changes
This page will be updated before any new subprocessor is engaged. A changelog of changes is maintained below.
| Date | Change |
|---|---|
| 24 February 2026 | Initial publication. |
| 18 April 2026 | Migrated product analytics from self-hosted to PostHog Cloud EU (Frankfurt); added PostHog, Inc. as subprocessor. Clarified Sentry status: error tracking has been provided by Sentry Cloud EU since inception; added Functional Software, Inc. dba Sentry as a named subprocessor for transparency. |
| 29 May 2026 | Updated AWS subprocessor scope to include AI inference (AWS Bedrock — large-language-model processing for Mast AI). AI inference runs in the AWS Switzerland (Zurich) region (eu-central-2) and is covered by our existing AWS subprocessor relationship. |
Contact
For questions about our subprocessors, please contact us at contact@mastfinance.io.
Mast Finance Sàrl — Rue Centrale 15, 1003 Lausanne, Switzerland — contact@mastfinance.io