TL;DR This is Phase 10 of the FSx for ONTAP S3 Access Points serverless pattern library. Building on Phase 9 , Phase 10 delivers: FPolicy event-driven integration : ONTAP FPolicy → ECS Fargate TCP server → SQS → EventBridge custom bus. The shared event-ingestion pipeline is verified end-to-end; UC-specific dispatch follows in Phase 11. Multi-account StackSets : All 17 UC templates validated for StackSets compatibility (0 errors) + admin/execution role templates UC-specific alarm profiles : BATCH / REALTIME / HIGH_VOLUME — three profiles with workload-appropriate thresholds Cost optimization : Dynamic MaxConcurrency controller + business-hours scheduling (rate(1h) vs rate(6h)) E2E verification : NFSv3 ✅, NFSv4.0 ✅, NFSv4.1 ✅, SMB ✅, NFSv4.2 ❌ (unsupported by ONTAP FPolicy) In short : Phase 9 completed the operational baseline. Phase 10 builds and verifies the shared event-ingestion pipeline that the pattern library has needed since Phase 1 — without waiting for AWS to ship native S3AP notifications.…