Should an international product host its servers and data in China or overseas?
Do not choose a server region from user location alone. First map the operating and contracting entities, user regions, data classes, administrator access, logs, and backups, then place workloads near users within the verified legal boundary. An overseas-first business will often use an overseas primary region; material operations in both China and overseas often require data partitioning.
A Frankfurt region does not automatically satisfy GDPR, and a Shanghai region does not prove that data remains in China. Overseas support viewing Chinese user records, a foreign log service receiving IP and account data, or cross-border disaster recovery can create a transfer. GDPR does not universally require EU personal data to remain in the EU; transfers outside the EEA require an applicable mechanism and safeguards.
When evaluating overseas entities, channels, and compliance paths, also compare How should an international fulfilment workflow be designed? and How does a cross-border ecommerce site differ from a domestic store?; the linked guidance adds context that should be considered in the same decision.
| Deployment | Best conditions | Main control | Main risk |
|---|---|---|---|
| One overseas primary region | Predominantly overseas users and clear entity/operations | Local privacy, remote access, subprocessors, regional DR | Poor experience elsewhere and regional failure |
| Mainland China primary + global CDN | China operations and public overseas content | Mainland site/data duties and reviewed edge caching | CDN does not fix dynamic API, payment, or admin latency |
| Overseas primary + China access | Overseas-first with limited China activity | China access, management, and return flows | Variable China availability and tail latency |
| China/overseas partition | Sustained users or data boundaries on both sides | Identity, master data, reporting, backup, and support separation | Highest reconciliation, deletion, and incident complexity |
Wavesteam maps collector, purpose, fields, primary storage, caches, backups, remote administrators, cloud and subprocessors, retention, and user access/deletion. Legal analysis follows the full chain, not the region label.
China's Provisions on Facilitating and Regulating Cross-border Data Flows, rechecked on 26 August 2026, provide exemptions and different routes according to critical-information-infrastructure status, important data, ordinary personal information, and sensitive personal information. They include an exemption context for a non-CIIO exporting fewer than 100,000 individuals' ordinary personal information accumulated since 1 January of that year. That does not remove other duties involving sensitive or important data, notices and consent, or impact assessment. Qualified counsel must apply the current rules to the actual facts.
For Europe, the European Commission's current international-transfer guidance explains adequacy decisions, standard contractual clauses, and other safeguards. Wavesteam implements the chosen architecture; it does not decide governing law for the client.
Test target cities, carriers, mobile and fixed networks across business peaks. Measure DNS, TCP/TLS, time to first byte, page completion, API P50/P95/P99, errors, payment callbacks, and weak/cross-border failure. CDN suits reviewed public static assets; authentication, stock, orders, payments, and personalized APIs still depend on origin, databases, and third parties. Do not enable uncontrolled multi-region database writes merely for low latency; assign each account/order a primary authority and failure behavior.
Backups and logs also cross borders. Where replication is restricted, design multi-zone or a second region within the same legal area and prove RPO/RTO through recovery exercises.
Wavesteam delivers a region decision table covering countries and user share, entities and roles, data class and volume, storage/cache/log/backup regions, administrator locations, subprocessors, transfer mechanism, latency, failover, and exit. Unresolved legal items block launch. The client holds appropriate accounts and obtains legal advice; Wavesteam owns performance tests, partition design, migration, and technical evidence.