Nigerian banks and high-volume fintechs are facing an architectural challenge as they prepare for the Central Bank of Nigeria’s January 1, 2027 data-localization deadline, with some considering split-cloud models that keep applications on foreign public clouds while regulated payment data is hosted in Nigeria.
The approach could reduce the disruption of moving entire systems domestically, but hyperscalers told BusinessDay that it may create new dependencies between applications running abroad and data stored locally. The CBN’s June 2026 circular requires financial institutions and payment participants to store and manage payment transaction data generated in Nigeria within the country.
The requirement covers banks, payment service providers, switching and processing companies, mobile money operators and other licensed participants, making data localisation an architecture decision rather than simply a database exercise. Institutions must consider where applications run, where data is processed, where backups are held and how systems communicate across borders.
Temitope Osunrinde, director of Africa Hyperscalers, said institutions could move regulated databases to domestic infrastructure while retaining applications and other workloads on international cloud platforms. However, he warned that separating application computing from locally hosted data could introduce latency and operational risks.
He said the impact would depend on application design, network quality, database requests and caching, noting that repeated communication between application and database environments could affect systems handling authentication, fraud checks, account validation and ledger updates. The risk could be more significant for high-volume payment platforms, making application-specific performance testing essential.
Cost is another consideration, Osunrinde said. While moving only regulated data to Nigeria could reduce the immediate cost and disruption of wider migration, institutions could end up paying for infrastructure in multiple locations. Foreign-cloud charges, domestic infrastructure costs, cross-border data-transfer fees and foreign-exchange exposure could all add to the financial burden.