Blog

Articles from our consultants across Dynamics 365, the Power Platform, cloud engineering, cyber security, AI and custom software.

AI, Data and Analytics

Permission-Aware RAG: Retrieval That Respects User Permissions

Permission-aware RAG runs retrieval as the requesting user, so restricted documents never reach the model. How to build it, where it fails, and why it...

20 Jan 2026 4 min read

Duke Le

AI, Data and Analytics

LLM Evaluation: Why the Test Harness Matters More Than the Model

An LLM evaluation harness tells you with a number whether your AI system is any good. What it contains, how long it takes to build, and what changes o...

28 Apr 2026 4 min read

Duke Le

AI, Data and Analytics

Why AI Projects Fail: RAG Retrieval Problems, Not the Model

Most production AI failures trace back to RAG retrieval: stale indexes, broken chunking, conflicting documents and late permissions. What to fix befor...

9 Sep 2025 4 min read

Duke Le