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Foreign companies serving users in Turkey need to clarify which data must be stored within Turkey's borders and what their obligations are under KVKK (Turkey's data protection law). This guide provides a practical roadmap, from the concept of data localization to setting up compliant server infrastructure in Turkey.
A foreign company needs to distinguish four core concepts to correctly assess its KVKK obligations in the Turkish market.
The law can cover companies processing personal data of individuals in Turkey regardless of whether the data processor is established in Turkey.
In some sectors (e.g. finance, healthcare), specific data types may be legally required to be physically stored within Turkey's borders under sector-specific regulations.
For data controllers not established in Turkey, KVKK may require appointing a representative in Turkey under certain conditions.
Transferring data collected in Turkey abroad is subject to conditions set by KVKK (adequacy decision, undertaking, etc.).
Even when localization isn't mandatory, hosting in Turkey offers practical advantages for many foreign companies.
Finance, payment systems and certain public-sector-adjacent services can be explicitly required by specific regulations to localize data.
Data hosted within Turkey can make it easier to track and document data flow during KVKK Authority audits.
For applications serving a Turkish user base, hosting in Turkey provides lower latency compared to overseas servers.
If data stays in Turkey, the additional contracts and approval processes required for cross-border transfer may not apply.
The compliance process should start with a legal assessment before technical infrastructure setup.
Work with legal counsel to assess whether your company falls under KVKK's scope and whether your sector has specific data localization requirements.
Map which personal data is collected, where it's stored, and who it's shared with.
Instead of moving your entire infrastructure to Turkey, evaluate hosting only the dataset that requires localization there.
Select a provider operating in Turkey based on data center location, security certifications and support quality.
If you're a data controller not established in Turkey, check whether you're required to appoint a representative.
Keep your privacy notice, explicit consent processes and data processing inventory up to date, and conduct regular internal audits.
Data type, purpose of collection, retention period, access rights and third-party sharing.
Confirming by contract that the hosting provider's data center location is within Turkey's borders.
Determining which mechanism applies if transfer is needed: adequacy decision, undertaking, or KVKK Board approval.
Assessing whether a representative appointment is required for a data controller not established in Turkey, per current regulation.
Clearly stating the data controller's identity, processing purpose, legal basis and data subject rights.
Reviewing the data processing inventory and third-party sharing at least once a year.
Yes, KVKK can, under certain conditions, cover companies not established in Turkey but processing the data of individuals in Turkey; the specific situation requires legal assessment.
There's no general requirement; localization is mostly regulated by sector-specific rules (finance, payment systems, etc.) or specific data types.
It can be required under certain conditions for data controllers not established in Turkey; current criteria should be verified against KVKK Authority regulations.
Yes, you can build a hybrid architecture, keeping only the dataset that requires localization or low latency in Turkey while the rest stays on your existing infrastructure.
They're based on similar principles but are separate regulations; GDPR compliance doesn't automatically ensure KVKK compliance — both need to be assessed separately.
Start with a legal scope assessment and build your data inventory, then plan the technical setup with a hosting provider that fits your needs.
Official regulations, guides and board decisions on personal data protection in Turkey.
The official full text of the Personal Data Protection Law.
The European Union's official source on data protection regulation, useful as a comparison reference.
Get in touch about server options that fit your data center location and security requirements.
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