What This Post Covers This is a companion article to the FSx for ONTAP S3 Access Points Serverless Patterns series. While that series focuses on serverless patterns for FSx for ONTAP S3 Access Points across industries, this post covers the v4.2 release of the Agentic Access-Aware RAG system — a permission-aware RAG application built on FSx for ONTAP + Amazon Bedrock, production-grade in the sense of CI coverage, permission filtering, guardrails, and deployment parameterization — while some v4.2 features still have follow-up E2E items listed in What's Next. The v4.2 release adds five features that address real-world enterprise needs: intelligent model routing for cost optimization, SFTP-based document ingestion for partners who can't use web UIs, automatic KB synchronization, operational guardrails for FSx ONTAP automation, and voice-based interaction via WebRTC. 1. Smart Routing Model Expansion The Problem Enterprise RAG workloads have wildly different complexity levels.…