As AI systems evolve from stateless prompts to autonomous, context-aware agents, enterprise infrastructure is being tested in new ways. The challenge isn't just in compute—it's in memory. Intelligent systems now need to retrieve, recall, and reason over vast, interrelated data while maintaining speed, consistency, and explainability. Agentic AI Data Architectures explores how distributed SQL is redefining the data layer for this new era, offering a unified approach to structured, semantic, and temporal retrieval at scale.