The PHI network for
cloud compute.

Every request is classified per call, and PHI traffic routes only to provider/region pairs flagged PHI-eligible in our registry — Infomaniak and Azure in Switzerland, Scaleway and Azure in the EU, and Azure in the US for OCR, speech-to-text and text-to-speech (US chat, vision and embeddings PHI are not available). Non-eligible providers carry general traffic only.

CloudSitus never trains on your data and stores no prompts or responses — requests pass through in memory. PHI only reaches providers whose DPA or BAA we have reviewed; general traffic is governed by each vendor’s own API terms, and we send a vendor’s per-request training opt-out where one exists (Deepgram).

Each request routes only among providers that serve the jurisdiction you select. PHI goes only to resident, PHI-eligible hosts in CH, the EU or the US and never crosses a border. For general traffic the resident provider ranks first in CH, the EU and the US; global clouds that serve the region (and process globally) are later fail-overs there, and serve the other regions. Pin a model to keep a call on that model.

Every routed response carries machine-readable audit headers — x-phi-tier, x-phi-routed, x-phi-attempts — recording the routing decision so compliance reviews are trivial.