Yes, an on-premise LLM can be deployed in a way that complies with Turkey's KVKK, and for many Turkish organizations on-premise deployment is the most direct path to compliance, since it keeps personal data physically located and processed within Turkey rather than transferred abroad. KVKK restricts cross-border transfer of personal data more strictly than many other privacy regimes, so sending prompts containing customer or employee information to a foreign-hosted API like OpenAI's raises the same cross-border transfer questions that international companies face under GDPR, only with a more specific Turkish legal test. Running an open-weight model such as Llama or Qwen on GPU servers located in a Turkish datacenter, with logging, access control and retention policies aligned to KVKK's data processing requirements, removes that cross-border question entirely. Organizations still need an explicit lawful basis for processing, a data controller registration where applicable, and clear data subject rights procedures regardless of where the model runs. Sector-specific rules, particularly in banking and healthcare, often add further localization requirements on top of KVKK itself. Nanobase AI has deployed on-premise AI systems for organizations operating under KVKK and designs the hosting location and data flows around that requirement from day one.
Why KVKK pushes harder toward on-premise than GDPR does
KVKK, Turkey's Personal Data Protection Law, restricts cross-border transfer of personal data more strictly in practice than GDPR does, which makes on-premise deployment inside Turkey a more direct path to compliance than it would be for an EU-only requirement. Sending prompts containing Turkish customer or employee data to a foreign-hosted API introduces exactly the cross-border transfer exposure KVKK is designed to prevent, so processing that data on infrastructure physically located and operated within Turkey removes the issue rather than requiring case-by-case contractual justification.
KVKK vs GDPR for LLM deployments
KVKK and GDPR share the same underlying goal but differ enough in specifics that a GDPR-compliant architecture cannot simply be assumed to satisfy KVKK as well.
| Requirement | GDPR | KVKK |
|---|---|---|
| Cross-border transfer | Permitted with safeguards (SCCs, adequacy) | More restrictive; generally requires explicit consent or a specific legal basis absent an adequacy decision |
| Registration | No general registry requirement | Data controllers generally must register with VERBIS (the Data Controllers' Registry) |
| Enforcement authority | National DPAs plus EDPB coordination | KVKK Authority (Kişisel Verileri Koruma Kurumu) |
| Practical implication for AI | On-premise helps but private EU cloud can also work | On-premise or Turkey-based sovereign cloud is the more defensible default |
Steps to a KVKK-compliant on-premise LLM
- Determine whether the company is required to register as a data controller with VERBIS, which most organizations processing employee or customer data will be.
- Locate the GPU infrastructure and any supporting services, such as the vector database and logging store, physically within Turkey.
- Choose an operating entity structure, whether the infrastructure is run directly or through a Turkey-based hosting or colocation partner, that keeps legal responsibility clearly within Turkish jurisdiction.
- Establish a lawful basis for processing personal data through the LLM, typically explicit consent or a legitimate interest justification documented per KVKK's requirements.
- Restrict any remote support or maintenance access to personnel and vendors that do not create an unreviewed cross-border data path.
- Document the full data flow, from prompt input through logging and retention, in a form ready for KVKK Authority review.
A KVKK-compliant deployment is not just about hosting location; the operating entity, support access, and documented data flow all have to point to the same conclusion, that personal data stays within Turkish jurisdiction end to end.
Where this differs from a typical EU on-premise build
Companies familiar with GDPR-driven on-premise deployments sometimes wrongly assume the same architecture automatically satisfies KVKK, when the VERBIS registration requirement and KVKK's stricter default transfer position both need separate attention. A multinational running both EU and Turkish operations often ends up with two regionally separated on-premise deployments rather than one shared infrastructure serving both.
Frequently asked questions
Does KVKK apply to a company outside Turkey processing Turkish customer data?
Yes, KVKK can apply based on where the data subjects are located, not just where the company is headquartered, which is why foreign companies serving Turkish customers or employing staff in Turkey need to assess KVKK obligations even without a Turkish legal entity.
Is a private cloud region in Turkey enough, or does it need to be true on-premise?
A cloud region physically located in Turkey can satisfy the localization aspect if the operating entity and support access are also structured correctly, but on-premise removes ambiguity about foreign parent company access, which is why many organizations still prefer it for the highest-sensitivity data.
What is VERBIS and does every company need to register?
VERBIS is Turkey's Data Controllers' Registry; registration is generally required for data controllers above certain size and processing-volume thresholds, with some exemptions for smaller organizations, so this should be checked against current KVKK Authority guidance for the specific company's situation.
How Nanobase AI helps
Nanobase AI, a Silicon Valley enterprise AI engineering company, designs and deploys on-premise LLM infrastructure located and operated within Turkey, structured to support KVKK's data localization expectations alongside the technical architecture. The team coordinates with a company's legal counsel on the lawful-basis and VERBIS registration questions while handling the GPU sizing, installation, and integration work, informed by the broader EU AI Act, GDPR, and KVKK compliance checklist.
Ready to discuss your project? Contact Nanobase AI or email hello@bumu.tech.