Comparison / 12 capabilities
YTT Secunet vs Azure OpenAI Direct with the EU Data Boundary
Calling Azure OpenAI directly from an EU region is a strong baseline, and for many teams it is enough.
Matrix tally
- YTT Secunet edge7
- Parity2
- Azure OpenAI direct with the EU Data Boundary edge3
Rows where Azure OpenAI direct with the EU Data Boundary is stronger are marked as such. Filter the matrix below to read them first.
Microsoft completed its EU Data Boundary in February 2025, covering customer data and pseudonymized personal data for its core cloud services, including Azure regional services deployed in EU Data Boundary regions. In Microsoft Foundry, Data Zone deployments keep inference processing inside the EU data zone, and Standard or Regional Provisioned deployments keep it inside the Azure geography you choose. Microsoft's sovereign cloud programme adds controls such as Data Guardian and External Key Management. YTT Secunet does not replace any of that; it routes to those Azure deployments. It becomes useful when one application serves several legal regimes, when you want a non-Azure fallback inside the same jurisdiction, when identities should be pseudonymized before Azure sees the prompt, or when auditors want per-request proof they can verify themselves.
| Capability | YTT Secunet | Azure OpenAI direct with the EU Data Boundary | Edge |
|---|---|---|---|
| Processing location for Azure-hosted models | Routes to your Data Zone or regional deployments and records which one served each call. It does not change Microsoft's processing commitments. | Data Zone (EU) deployments process within the Azure EU Data Boundary; Standard and Regional Provisioned deployments process within the chosen Azure geography. Data at rest stays in the designated geography. | Parity |
| Platform integration | An OpenAI-compatible endpoint in front of your Azure resources. Identity and networking are configured per endpoint. | Native Microsoft Entra ID, managed identities, private endpoints, Azure Monitor and Foundry tooling, all in one subscription and one bill. | Alternative edge |
| Preventing the wrong deployment type | Policy refuses calls to deployments outside the allowed set for that tenant and records the reason in the receipt. | Azure Policy can deny the creation of Global deployment types across a subscription or management group. | Parity |
| Commitments from the infrastructure owner | YTT Secunet cannot make commitments about Microsoft's datacentres, personnel or support processes. | Microsoft's EU Data Boundary, its published European digital commitments, and Sovereign Public Cloud controls such as Data Guardian for European-resident oversight of remote access and External Key Management with customer HSMs. | Alternative edge |
| Width of the residency boundary | Policy can pin a tenant to a narrower set, for example German facilities only, and still fail over inside that set. | The EU data zone follows the EU Data Boundary, which can include EFTA countries such as Norway and Switzerland, and Microsoft can add regions to a zone without prior notice. Regional deployments give a narrower boundary per resource. | YTT Secunet edge |
| Several legal regimes in one application | The policy pack is chosen per request from tenant domicile, user geo-IP or data sensitivity, so EU, UK and Swiss users share one integration. | One deployment per boundary, with the application choosing the right resource and key for each user. | YTT Secunet edge |
| Model and provider choice | Azure plus AWS, Google Cloud, Mistral, OVHcloud, Scaleway, STACKIT, Swisscom and self-hosted vLLM or Ollama under the same policy. | A large catalogue of models sold by Azure, including several non-OpenAI families, all inside Azure. | YTT Secunet edge |
| Resilience | Jurisdiction-scoped failover across Azure regions and across providers, for example Azure Germany West Central to an EU-hosted Mistral endpoint. | Data Zone deployments route dynamically within the zone, and Azure API Management backend pools with circuit breakers can fail over between Azure resources. | YTT Secunet edge |
| PII before the model provider | In-path pseudonymization with a reversible vault in the origin jurisdiction, so Azure receives tokens instead of names, IBANs or national IDs. | Azure AI Language offers PII detection as a separate service you call yourself; Azure AI Content Safety targets harmful content rather than identifiers. | YTT Secunet edge |
| Abuse monitoring exposure | Does not change Microsoft's abuse monitoring, but pseudonymized prompts mean any sample retained for review carries tokens rather than identities. | Prompts and completions flagged by abuse monitoring may be stored for human review in the resource's geography, unless you are approved for modified abuse monitoring. | YTT Secunet edge |
| Per-request evidence | Signed receipt with provider region id, facility, upstream TLS certificate thumbprint, model id and policy version, verifiable offline against a published Merkle root. | Microsoft compliance documentation and audit reports, plus your own Azure Monitor and application logs. | YTT Secunet edge |
| Latency and cost | Under 8 ms p99 added (YTT Secunet figure) and a subscription from $799 per month. | No extra hop and no extra subscription beyond Azure consumption. | Alternative edge |
- Azure OpenAI is your only model provider and the EU is your only regulatory regime.
- You want Microsoft's own sovereignty controls end to end, including Sovereign Private Cloud on Azure Local for on-premises workloads.
- Your auditors accept Microsoft's compliance documentation and your deployment configuration as evidence of processing location.
- You have already standardised on Azure API Management AI gateway policies for token limits, semantic caching and load balancing.
- One application serves EU, UK, Swiss or GCC users and each group needs a different policy and destination.
- You want a fallback outside Azure that is still inside the jurisdiction, such as an EU-hosted Mistral endpoint or your own vLLM cluster.
- Identities in prompts should be pseudonymized before any provider, including Microsoft, receives them.
- Enterprise customers or regulators want per-request proof they can verify without access to your Azure tenant.
Most teams run both for a while. These steps keep your current setup serving traffic until the receipts show the new route is doing what policy says.
- 01
Keep your Azure resources as they are. Register each deployment in the Sovereign Endpoints registry with its region and deployment type.
- 02
Change the SDK base URL from your Azure resource endpoint to the YTT Secunet regional base URL and add the tenant and policy headers.
- 03
Leave Azure Policy denying Global deployment types in place as a second line of control.
- 04
Add a second in-jurisdiction endpoint, on Azure or another provider, as the failover target for each tenant group.
- 05
Enable PII guardrails for the identifier types your DPIA lists, then check a sample of receipts before widening the rollout.
Whatever sits in front of your providers today, the integration point for YTT Secunet is the inference client. The base URL moves to the regional entry point for the tenant's zone, and two headers name the tenant and the policy pack.
Request and response bodies keep the OpenAI or Anthropic schema, so streaming, tool calls and JSON mode work as before. The model name becomes a logical alias that the endpoint registry maps to an in-zone deployment.
- A denied request returns HTTP 451 with a decision id, never a silent reroute
- Every response carries a signed residency receipt header
- Receipts export to your SIEM alongside your current gateway logs
import OpenAI from "openai";
// Before: provider default endpoint, region decided by the provider.
// After: YTT Secunet regional entry point, zone decided by policy.
const client = new OpenAI({
baseURL: "https://eu.yttsecunet.com/v1",
apiKey: process.env.YTT_SECUNET_API_KEY,
defaultHeaders: {
"X-YTT-Policy": "eu-gdpr-strict@4.2.0",
"X-YTT-Tenant": tenant.id,
},
});
const res = await client.chat.completions
.create({ model: "gpt-4o", messages })
.withResponse();
const receipt = res.response.headers.get("x-ytt-proof-signature");Does the EU Data Boundary already make Azure OpenAI GDPR-compliant for us?
It is a strong residency commitment from Microsoft, but residency is one input. You remain the controller, so the Article 28 terms, your records of processing, your DPIA and any transfer assessment are still yours. Note also that the EU data zone can include EFTA countries, which matters if your policy is EU-only rather than EEA-wide.
Does routing through YTT Secunet remove CLOUD Act questions about Azure?
No. Microsoft is a US company and in-region hosting does not change that. YTT Secunet reduces what there is to disclose by pseudonymizing identities before the prompt leaves your jurisdiction and by keeping no prompts itself, but it does not make any provider immune.
Can we keep Azure API Management in front of Azure OpenAI?
Yes. Some customers keep API Management for token limits and internal chargeback and place YTT Secunet in front of it as the jurisdiction layer. Register the API Management endpoint as the upstream so receipts still record the Azure region that served each call.
Does our Microsoft agreement change?
No. You stay Microsoft's customer under your existing terms, consumption and reserved capacity. YTT Secunet appears in your DPA chain as an additional processor for the routing layer.
Sovereign route ready
Put both on the same traffic and compare the evidence.
Start a 14-day trial, route one tenant through YTT Secunet, and check every receipt with the open-source verifier.