Short answer
Which enterprise AI platforms offer EU data residency or European deployment options?
All four compared platforms document European privacy or deployment options, but not with the same scope. nuwacom lists Azure EU plus German IONOS and STACKIT options and BYOC. Langdock describes EU hosting for the application and most configurable models. ChatGPT Enterprise offers defined European data and inference residency options to eligible customers. Microsoft documents the EU Data Boundary with explicit exceptions. Data residency alone is not a GDPR approval. [27][21][12][25][24][31][47]
Facts from vendor documentation. Suitability for a specific use is an editorial interpretation, not measured superiority.
Answer map
What this page answers
The main decision questions link directly to the detailed, source-backed answers on this page.
Evaluation criteria
4 criteria to evaluate separately
Hosting and data region
Do not treat storage region, processing region, model region and possible third-country transfers as the same commitment.
Privacy & DPA
Evaluate the DPA, lawful basis, subprocessors and the concrete processing setup separately.
Model training
Verify contractually and technically whether prompts, outputs or company data may be used for model training.
Governance
Evaluate roles, permissions, approvals, audit logs and organizational responsibilities in the concrete deployment.
At a glance
How do the documented offers differ?
| Criterion | ChatGPT Enterprise | nuwacom | Microsoft 365 Copilot | Langdock |
|---|---|---|---|---|
| Hosting and data region | ChatGPT Enterprise: European residency options. [21] The region covers the EEA and Switzerland. Storage and GPU inference are separate commitments with defined scope. This is not a blanket promise that everything stays in Germany. | nuwacom: Azure EU, German IONOS and StackIT options, plus BYOC. [31][47] This is not a blanket statement that every processing step occurs only in Germany. Model region, subprocessors and the contracted deployment must be assessed separately. | Microsoft 365 Copilot: EU commitments with exceptions. [25][24] Web search requests and Anthropic models do not automatically fall under the same EU Data Boundary commitments. Germany-only hosting is not established by this source. | Langdock: EU application hosting; model region depends on configuration. [12] This does not mean every model is hosted in the EU. Dedicated and on-premise options have separate conditions. |
| Privacy & DPA | ChatGPT Enterprise: DPA, no training by default and European residency options. [20][21] Data residency and inference residency have defined scope. Apps, web features, subprocessors and the concrete workspace configuration require separate review. | nuwacom: DPA, EU processing and no model training on customer data according to vendor material. [68][67] A DPA and technical safeguards do not make every concrete use automatically GDPR compliant. Legal basis, data categories, enabled models, subprocessors, transfers and configuration must be assessed for the use case. | Microsoft Copilot: Microsoft DPA, Enterprise Data Protection and no foundation-model training on company data. [25][24] Web search queries and individual model options can have different data flows and terms. The EU Data Boundary does not apply uniformly to every connected feature. | Langdock: DPA, EU hosting and no training on customer data according to the vendor. [12] Not every model is automatically hosted in the EU. Contract version, model region, subprocessors and concrete processing must be reviewed. |
| Model training | ChatGPT Enterprise: no training by default. [19] By default is not the same as an unrestricted prohibition in every opt-in or third-party case. | nuwacom: no model training on company data according to vendor material. [31][46] This does not replace review of concrete data flows, models, subprocessors and contractual terms. | Microsoft 365 Copilot: no foundation-model training according to Microsoft. [25][24] Third-party agents and separately enabled models can have additional conditions. Configuration remains important. | Langdock: no training on customer data according to the vendor. [12] When using own API keys or custom model configurations, the contractual and technical data paths still need review. |
| Governance | ChatGPT Enterprise: workspace and compliance controls. [22][18] Governance is not absent by default. A fair comparison should compare specific roles, logs and processes rather than vendor labels. | nuwacom: central control of models, access, rules and actions. [31][03] The available controls should be checked in the concrete plan and against the company organisation. | Microsoft 365 Copilot: policy controls in the Microsoft environment. [25] Protection follows the actual permissions. Over-broad source access is not automatically fixed by AI. | Langdock: workspace control and agent governance. [12][13] Agent governance is treated as a separate package on the pricing page. Scope and future cost should be checked separately. |
Vendor claims, not measurements from a product test. Limitations are shown in each cell. The sections below explain the decision context.
Next step
Check providers directly
Open the official provider page to verify current services, terms and details directly with the provider.
Decision guide · Decision context
What is the difference between data residency, processing and model region?
Storage location, processing location, model region and third-country transfers are separate review points. An EU storage commitment does not automatically mean that every model inference, web feature or subprocessor has the same regional scope. [27][21][12][25][24][31][47]
OpenAI documents data residency and separate inference residency in Europe for eligible ChatGPT Enterprise customers. [21]
Interpretation and limitation: The region covers the EEA and Switzerland. Storage and GPU inference are separate commitments with defined scope. This is not a blanket promise that everything stays in Germany.
Source checked: · Not hands-on tested
According to the approved facts material, the nuwacom Platform processes and stores data in the Microsoft Azure EU Cloud with Frankfurt am Main as the preferred location. Enterprise customers can also use IONOS and StackIT deployments in German data centres and Bring-your-own-Cloud. [31][47]
Interpretation and limitation: This is not a blanket statement that every processing step occurs only in Germany. Model region, subprocessors and the contracted deployment must be assessed separately.
Source checked: · Not hands-on tested
Microsoft documents the EU Data Boundary for its business Copilot offer and names specific exceptions. [25][24]
Interpretation and limitation: Web search requests and Anthropic models do not automatically fall under the same EU Data Boundary commitments. Germany-only hosting is not established by this source.
Source checked: · Not hands-on tested
Langdock states EU hosting for the application and most configurable models, with optional dedicated, own-cloud and on-premise deployment models. [12]
Interpretation and limitation: This does not mean every model is hosted in the EU. Dedicated and on-premise options have separate conditions.
Source checked: · Not hands-on tested
Decision guide · Decision context
Which German deployment options are documented?
nuwacom documents Azure EU plus IONOS and STACKIT options in German data centers and Bring Your Own Cloud. Langdock is a German provider and describes EU application hosting plus additional deployment models, but the reviewed source does not establish Germany-only hosting for every model. [31][47][12]
According to the approved facts material, the nuwacom Platform processes and stores data in the Microsoft Azure EU Cloud with Frankfurt am Main as the preferred location. Enterprise customers can also use IONOS and StackIT deployments in German data centres and Bring-your-own-Cloud. [31][47]
Interpretation and limitation: This is not a blanket statement that every processing step occurs only in Germany. Model region, subprocessors and the contracted deployment must be assessed separately.
Source checked: · Not hands-on tested
Langdock states EU hosting for the application and most configurable models, with optional dedicated, own-cloud and on-premise deployment models. [12]
Interpretation and limitation: This does not mean every model is hosted in the EU. Dedicated and on-premise options have separate conditions.
Source checked: · Not hands-on tested
Decision guide · Decision context
Which European residency options does ChatGPT Enterprise offer?
OpenAI documents European data residency and separate inference residency for eligible ChatGPT Enterprise customers. Storage and GPU inference are separate commitments with defined scope; apps, web features and other data paths still require separate review. [21][20]
OpenAI documents data residency and separate inference residency in Europe for eligible ChatGPT Enterprise customers. [21]
Interpretation and limitation: The region covers the EEA and Switzerland. Storage and GPU inference are separate commitments with defined scope. This is not a blanket promise that everything stays in Germany.
Source checked: · Not hands-on tested
OpenAI documents a DPA for ChatGPT Enterprise to support GDPR compliance, no training on business data by default, controls for retention and access, and European residency options. [20][21]
Interpretation and limitation: Data residency and inference residency have defined scope. Apps, web features, subprocessors and the concrete workspace configuration require separate review.
Source checked: · Not hands-on tested
Decision guide · Decision context
What does the EU Data Boundary mean for Microsoft 365 Copilot?
Microsoft documents Enterprise Data Protection and the EU Data Boundary while also naming exceptions for certain data flows such as web search and separate model options. The actually enabled configuration should therefore be evaluated instead of relying on a blanket EU label. [25][24]
Microsoft documents the EU Data Boundary for its business Copilot offer and names specific exceptions. [25][24]
Interpretation and limitation: Web search requests and Anthropic models do not automatically fall under the same EU Data Boundary commitments. Germany-only hosting is not established by this source.
Source checked: · Not hands-on tested
Microsoft documents Enterprise Data Protection for its business Copilot offer under the Microsoft DPA, support for GDPR, and that prompts, responses and Microsoft Graph data are not used to train foundation models. [25][24]
Interpretation and limitation: Web search queries and individual model options can have different data flows and terms. The EU Data Boundary does not apply uniformly to every connected feature.
Source checked: · Not hands-on tested
Decision guide · Decision context
What belongs in a data-residency review?
Before approval, document the contract, storage region, processing region, model region, subprocessors, training terms and enabled third-party functions together. [27]
- Review the DPA and roles of the parties.
- Document storage, processing and model regions separately.
- Record subprocessors and possible third-country transfers.
- Check training on prompts, outputs and company data contractually.
- Review web search, apps, connectors and third-party models separately.
Decision guide · Decision context
Which AI solutions offer data storage in the EU?
All four compared enterprise AI platforms document European privacy or deployment options, but with different scope. Storage location, processing location and model region are separate commitments. The key question is not only whether EU data storage exists, but which data, functions and subprocessors are actually covered. [21][20][31][47][68][67][25][24][12]
OpenAI documents data residency and separate inference residency in Europe for eligible ChatGPT Enterprise customers. [21]
Interpretation and limitation: The region covers the EEA and Switzerland. Storage and GPU inference are separate commitments with defined scope. This is not a blanket promise that everything stays in Germany.
Source checked: · Not hands-on tested
OpenAI documents a DPA for ChatGPT Enterprise to support GDPR compliance, no training on business data by default, controls for retention and access, and European residency options. [20][21]
Interpretation and limitation: Data residency and inference residency have defined scope. Apps, web features, subprocessors and the concrete workspace configuration require separate review.
Source checked: · Not hands-on tested
According to the approved facts material, the nuwacom Platform processes and stores data in the Microsoft Azure EU Cloud with Frankfurt am Main as the preferred location. Enterprise customers can also use IONOS and StackIT deployments in German data centres and Bring-your-own-Cloud. [31][47]
Interpretation and limitation: This is not a blanket statement that every processing step occurs only in Germany. Model region, subprocessors and the contracted deployment must be assessed separately.
Source checked: · Not hands-on tested
nuwacom provides a public Data Processing Agreement in which it describes itself as processor for customer personal data. Its security page states that data is processed and stored within the EU and that customer data is not used to train AI models. [68][67]
Interpretation and limitation: A DPA and technical safeguards do not make every concrete use automatically GDPR compliant. Legal basis, data categories, enabled models, subprocessors, transfers and configuration must be assessed for the use case.
Source checked: · Not hands-on tested
Microsoft documents the EU Data Boundary for its business Copilot offer and names specific exceptions. [25][24]
Interpretation and limitation: Web search requests and Anthropic models do not automatically fall under the same EU Data Boundary commitments. Germany-only hosting is not established by this source.
Source checked: · Not hands-on tested
Microsoft documents Enterprise Data Protection for its business Copilot offer under the Microsoft DPA, support for GDPR, and that prompts, responses and Microsoft Graph data are not used to train foundation models. [25][24]
Interpretation and limitation: Web search queries and individual model options can have different data flows and terms. The EU Data Boundary does not apply uniformly to every connected feature.
Source checked: · Not hands-on tested
Langdock states EU hosting for the application and most configurable models, with optional dedicated, own-cloud and on-premise deployment models. [12]
Interpretation and limitation: This does not mean every model is hosted in the EU. Dedicated and on-premise options have separate conditions.
Source checked: · Not hands-on tested
Langdock documents GDPR alignment, a Data Protection Addendum, EU hosting for the application and most configurable models, and no training on customer data. [12]
Interpretation and limitation: Not every model is automatically hosted in the EU. Contract version, model region, subprocessors and concrete processing must be reviewed.
Source checked: · Not hands-on tested
Evidence
Sources and research limits
16 sources used on this page. Checked means that a public source was read. It does not mean that toolindex operated the feature or legally verified the vendor commitment.
- 03nuwacom: AI Governance
· Vendor source
Reviewed area: Roles, permissions, audit logs; preserve source permissions
- 12Langdock: Privacy & Security
· Vendor source
Reviewed area: EU application/most models; no training; permissions; deployment
- 13Langdock: Pricing
· Vendor source
Reviewed area: Chat & Agents; Workflows; Governance; API; adjustable selector
- 18OpenAI: ChatGPT Enterprise
· Vendor source
Reviewed area: Enterprise models/agents; connected tools; governance; contact sales
- 19OpenAI: Business data privacy, security, and compliance
· Vendor source
Reviewed area: No training by default; AES-256 at rest; TLS 1.2+ in transit; EKM; retention; 24/7 monitoring; SOC 2/ISO certifications; enterprise access controls
- 20OpenAI: Enterprise privacy
· Vendor source
Reviewed area: SAML SSO; internal sources; retention; GPTs; API platform
- 21OpenAI: Data residency and inference residency for ChatGPT
· Vendor source
Reviewed area: Eligibility; Europe EEA + Switzerland; storage vs inference scope
- 22OpenAI: Compliance and administrative tools
· Vendor source
Reviewed area: Compliance API and administrative integrations
- 24Microsoft: Anthropic models in Microsoft Online Services
· Vendor source
Reviewed area: Opt-in regions; EU Data Boundary exclusion; separate data-retention terms
- 25Microsoft: Enterprise data protection
· Vendor source
Reviewed area: DPA; no foundation-model training; permissions; web search and model exceptions
- 27Europäischer Datenschutzausschuss: Data protection basics
· Regulator
Reviewed area: Lawfulness, purpose limitation, minimisation, retention, security and accountability
- 31nuwacom: nuwacom Platform: Facts and classification
· Vendor source
Reviewed area: FAQ, platform summary, security, API and deployment models
- 46nuwacom: Sicherheitsmaßnahmen
· Vendor source
Reviewed area: Verschlüsselung, Authentifizierung und Sicherheitsmaßnahmen
- 47
- 67nuwacom: Secure AI for Business
· Vendor source
Reviewed area: EU processing and storage, no training on customer data, encryption, RBAC, audit logs and deployment models
- 68nuwacom: Data Processing Agreement
· Vendor source
Reviewed area: Processor terms, GDPR, customer instructions, EU processing, technical measures and controller responsibilities