Subprocessors
The companies that help run the service
We use a small set of trusted providers to run the platform. Each handles one job, and only the data needed for it. We name them all here.
Last updated: 17 July 2026
| Provider | What it does for you | Primary region |
|---|---|---|
| VercelHosting & content delivery | Serves the website and app and routes your requests over its global edge network. | Global (US) |
| Amazon Web Services (AWS)Cloud infrastructure & storage | Runs our backend and stores your workspace data — your saved plans, transcripts, uploaded files and account records. | EU — Stockholm (eu-north-1) |
| ClerkSign-in & accounts | Manages account sign-in and identity (your name, email and login). We never see your password. | United States |
| SupabaseApplication database | Stores account records, your consent choices, billing status and product usage. | Managed cloud |
| StripePayments | Processes subscriptions and one-time payments. Your card details go straight to Stripe and never touch our servers. | Global (US) |
| ResendEmail delivery | Sends transactional emails such as reports, receipts and account notifications. | United States |
| CloudflareDNS & inbound email routing | Handles our domain (DNS) and routes email sent to our addresses. | Global (US) |
| DeepSeekAI language processing | Powers your strategist's replies and the drafts and plans generated from what you ask for. | International |
| OpenAIAI memory & search | Turns your messages into a searchable memory so your strategist keeps context across conversations. | United States |
| SanityContent management (blog) | Manages the content on our blog and resources. Holds no client account data. | EU / US |
| TavilyWeb research (generated sites) | Provides live market research used when we build a website for you. Not used to process your personal data. | United States |
| PexelsStock imagery (generated sites) | Supplies licensed stock photography used in websites we build. Holds no personal data. | EU |
| GoogleAnalytics & site diagnostics | Website analytics via Google Tag Manager (only if you accept analytics cookies), and page-performance data for our free audit tool. | Global (US) |
“Primary region” is each provider's main processing location. Some providers also use global infrastructure to deliver their service. Your core workspace data (plans, transcripts, files and account records) is stored in the EU.
Changes to this list
We'll update this page whenever we add, remove or change a provider. Material changes are also notified to active clients by email. If you rely on a specific provider list for your own compliance, email us and we'll flag changes to you directly.
Questions about a provider?hello@roisynth.com