The Region Setting Is Not the Workflow EU-hosted AI workflows often start with a reasonable checklist item: keep processing in Europe. That is a good default. It is also incomplete. A workflow can use an EU region for the model call and still leak customer data through the surrounding steps: file storage, OCR, PDF generation, logs, webhooks, review tools, analytics, or a support dashboard that quietly stores payloads outside the EU. The hard part is not choosing one EU-hosted service. The hard part is knowing where the data goes after the first trigger fires. For document-heavy AI workflows, this matters quickly. Invoices contain names, bank details, addresses, VAT numbers, and payment terms. Contracts contain signatures and employment context. Support attachments contain whatever the customer decided to upload. If those files pass through five tools, the compliance question applies to all five. EU hosting is an architecture property of the workflow, not a badge on one vendor page.…