As regulatory sandboxes have matured globally, central banks have evolved their designs to target specific financial development and inclusion goals.
The Regulatory Sandbox Matrix
[Regulatory Sandbox Architectures]
  |- Product-Specific Sandboxes -> Open to all fintech start-ups to test individual apps
  |- Thematic Sandboxes ----------> Focused on specific development targets (e.g., Green ESG or Gender-Inclusive finance)
  |- Cross-Border Hubs -----------> Links regional central banks to enable fast transnational testing

By connecting sandboxes across international boundaries (such as the Global Financial Innovation Network – GFIN), regional central banks can test and align cross-border payment platforms, remittances, and digital identity systems, lowering transaction costs across the region.
 
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