A unified database architecture with MongoDB Atlas provides a more streamlined approach to managing AI data, eliminating the need for synchronization logic and reducing operational complexity. In contrast, a split architecture involves separating vector operations and transactional data management into separate systems, which introduces additional complexity and potential inconsistencies. The unified approach offers benefits such as improved consistency guarantees, reduced latency, and increased developer velocity, making it a more future-proof choice for AI-powered applications. While a split architecture may be suitable for legacy systems or specialized requirements, the unified architecture with MongoDB Atlas is well-positioned to address emerging AI needs and provide a solid foundation for intelligent data management.