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AI Architecture Updates: September 13, 2026

architecture knowledge-graphs ai-agents rag observability

1. Cassie Shum Proposes Four Knowledge Graph Patterns for Agentic Systems

InfoQ published a presentation by Cassie Shum arguing that knowledge graphs belong underneath agent systems rather than beside them as a retrieval add-on, and naming four architectural patterns that follow from that: context bundling, decision provenance, code as truth, and agent visibility. The framing treats the graph as the structure that tightens feedback loops and holds token usage down while keeping the system reliable, which puts it in the same territory as the session-trace observability work covered earlier in the week. Source